View source for Open-source video game

{{Short description|Video game whose source code is open-source software}}
{{Use dmy dates|date=July 2022}}
[[File:FG-A-10.jpg|thumb|''[[FlightGear]]'' flight simulator]]

An '''open-source video game''', or simply an '''open-source game''', is a [[video game]] whose [[source code]] is [[open-source software|open-source]]. They are often freely distributable and sometimes [[cross-platform]] compatible.

== Definition and differentiation ==
Not all open-source games are [[free software]]; some open-source games [[list of open-source video games#Open-source games with non-free data|contain proprietary non-free content]]. Open-source games that are free software and contain exclusively [[free content]] conform to [[Debian Free Software Guidelines|DFSG]], [[Free-culture movement|free culture]], and open content and are sometimes called ''free games''. Many [[Linux distribution]]s require for inclusion that the game content is freely redistributable, [[freeware]] or commercial restriction clauses are prohibited.<ref>{{cite web|url=https://packages.debian.org/stable/games/ |title=Software Packages in 'stable', games section|publisher=[[Debian]]|access-date=2022-07-20}}</ref>

==Background==
{{see also|List of commercial video games with available source code}}

[[File:Game Jammers 3.jpg|thumb|right|250px|Participants in the [[:File:Free Knowledge Game Jam - Presentation at FOSDEM 2016.pdf|Free Knowledge Game Jam]] 2015, an open source and open data oriented [[game jam]]]]

In general, open-source games are developed by relatively small groups of people in their free time, with [[profit (economics)|profit]] not being the main focus. Many open-source games are volunteer-run projects, and as such, developers of free games are often hobbyists and enthusiasts. The consequence of this is that open-source games often take longer to mature, are less common<ref>{{cite web |last=Tozzi |first=Christopher |date=10 December 2013|title=Linux Foundation, Valve Promote Open Source Games for the Cloud|url=http://thevarguy.com/open-source-application-software-companies/linux-foundation-valve-promote-open-source-games-cloud |website=The VAR Guy|access-date=2014-05-23 |archive-url=https://web.archive.org/web/20140524030050/http://thevarguy.com/open-source-application-software-companies/linux-foundation-valve-promote-open-source-games-cloud |archive-date=2014-05-24|url-status=usurped}}</ref> and often lack the production value of commercial titles.<ref>{{cite web |last=Larabel |first=Michael |date=2012-06-13 |title=Most Open-Source Game Artwork is Awful |url=https://www.phoronix.com/scan.php?page=news_item&px=MTExODg |website=Phoronix |access-date=2016-09-14 |archive-url=https://web.archive.org/web/20160507081707/http://www.phoronix.com/scan.php?page=news_item&px=MTExODg |archive-date=2016-05-07|url-status=live}}</ref> In the 1990s a challenge to build high-quality content for games was the missing availability or the excessive price for tools like 3D modeller or toolsets for [[level design]].<ref>{{cite web |last=Hargreaves |first=Shawn |date=July 1999 |title=Playing the Open Source Game |url=http://www.talula.demon.co.uk/games.html |website=talula.demon.co.uk|access-date=2022-07-20|archive-url=https://web.archive.org/web/20111010003911/http://www.talula.demon.co.uk/games.html |archive-date=October 10, 2011|url-status=dead}}</ref>

In recent years, this changed and availability of [[open-source software|open-source tools]] like [[Blender (software)|Blender]], game engines and libraries drove open source and [[Independent video game development|independent video gaming]].<ref name="Blake">{{cite web|last=Blake|first=Michael |date=22 June 2011|url=http://www.ign.com/articles/2011/06/23/pc-gaming-doomed-or-zdoomed |title=PC Gaming: Doomed? or zDoomed? |website=[[IGN]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20140221222302/http://www.ign.com/articles/2011/06/23/pc-gaming-doomed-or-zdoomed |archive-date=2014-02-21}}</ref> [[FLOSS]] game engines, like the [[Godot (game engine)|Godot]] game engine, as well as libraries, like [[Simple DirectMedia Layer|SDL]], are increasingly common in game development, even proprietary ones.<ref>{{cite web |last=Dealessandri|first=Marie |date=2020-04-15|title=What is the best game engine: is Godot right for you? |url=https://www.gamesindustry.biz/articles/2020-04-14-what-is-the-best-game-engine-is-godot-right-for-you|website=GamesIndustry.biz|access-date=2022-07-20}}</ref> Given that game art is not considered software, there is debate about the philosophical or ethical obstacles in selling a game where its art is proprietary but the entire source code is free software.<ref>{{cite web |last=Stallman|first=Richard |author-link=Richard Stallman|title=Nonfree DRM'd Games on GNU/Linux: Good or Bad?| url=https://www.gnu.org/philosophy/nonfree-games.en.html |publisher=[[GNU Project]]|access-date=2020-08-02}}</ref><ref>{{cite web |last=Marchant|first=Julie |title=The Gaming Trap|url=http://onpon4.github.io/articles/gaming-trap.html|website=The Diligent Circle|via=[[GitHub Pages]]|access-date=2021-03-25|archive-url=https://web.archive.org/web/20191125215630/http://onpon4.github.io/articles/gaming-trap.html|archive-date=2019-11-25|url-status=dead}}</ref><ref>{{cite web |last=Lunduke |first=Bryan |date=2015-10-30 |title=The Gaming Paradox: There just aren't enough Free and Open Source video games |url=https://www.networkworld.com/article/2999877/the-gaming-paradox-there-just-arent-enough-free-and-open-source-video-games.html |website=[[Network World]]|access-date=2023-02-11}}</ref>

[[File:Godot3.4.png|thumb|left|250px|[[Godot engine]] editor]]

Some of the open-source game projects are based on formerly [[proprietary software|proprietary]] games, whose [[source code]] was released as open-source software, while the game content (such as graphics, audio and levels) may or may not be under a free license.<ref>{{cite web|last=Matthews|first=Matt |date=2002-08-31|title=Linux Games|url=http://freshmeat.net/articles/view/543 |website=[[Freshmeat]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20021017064413/http://freshmeat.net/articles/view/543/|archive-date=2002-10-17|url-status=dead}}</ref> Examples include ''[[Warzone 2100]]'' (a [[real-time strategy]] game)<ref>{{cite web|title=About|url=http://wz2100.net/old-site/about |archive-url=https://web.archive.org/web/20130701000445/http://wz2100.net/old-site/about |archive-date=2013-07-01  |website=wz2100.net|access-date=2022-07-20}}</ref> and ''[[Micropolis (video game)|Micropolis]]'' (a city-building simulator based on the ''[[SimCity (1989 video game)|SimCity]]'' source code). Advantage of such continuation projects is that these games are already "complete" as graphic and audio content is available, and therefore the open-source authors can focus on [[source port|porting]], [[patch (computing)|fixing bugs]] or [[video game modding|modding the games]].

[[File:WZ2100BASEANDUNITS.jpg|thumb|right|200px|''[[Warzone 2100]]'']]

In a 2004 article, Adam Geitgey questioned the compatibility of the [[open source|open-source]] culture with respect to the game development process. He suggested that perceived [[open-source software development|open-source development]] advantages do not work for games because users move on to new games relatively quickly and so do not give back to the project. Geitgey further noted that music and art development is not built up from the work of others in the same way that coding would be. He argued that high quality art content is required, which is typically produced commercially by paid artists. While [[Linux]] operates on the open-source philosophy, this may not benefit game development.<ref name="whereareossgames">{{cite web |last=Geitgey |first=Adam |date=2004-08-31 |title=Where are the Good Open Source Games? |url=http://www.osnews.com/story/8146 |website=OSnews |access-date=2010-04-13}}</ref>

As of September 2015, the [[Steam (service)|Steam]] gaming service has 1,500 games available on Linux, compared to 2,323 games for [[Macintosh|Mac]] and 6,500 [[Microsoft Windows|Windows]] games.<ref>{{cite magazine|last=Newman|first=Jared |date=21 September 2015 |title=Steam for Linux tops 1,500 games as launch of Valve's Steam Machines nears |url=http://www.pcworld.com/article/2984922/software-games/steam-for-linux-tops-1500-games-as-launch-of-valves-steam-machines-nears.html |magazine=[[PC World]]|access-date=20 July 2022}}</ref><ref>{{cite web |last1=Orland|first1=Kyle |last2=Machkovech |first2=Sam|date=15 October 2015|title=Steam's living room hardware blitz gets off to a muddy start |url=https://arstechnica.com/gaming/2015/10/steams-living-room-hardware-blitz-gets-off-to-a-muddy-start/2/ |website=[[Ars Technica]]|access-date=20 July 2022}}</ref><ref>{{cite web |last=Orland|first=Kyle|date=26 February 2015|title=The state of Linux gaming in the SteamOS era|url=https://arstechnica.com/gaming/2015/02/the-state-of-linux-gaming-in-the-steamos-era/|website=[[Ars Technica]]|access-date=20 July 2022}}</ref>

==History==

===Beginnings and early games===
[[File:Angband.png|right|thumb|200px|''[[Angband (video game)|Angband]]'']]

Just as in [[History of free and open-source software#Free software before the 1980s|most other forms]] of software, free software was an unconscious occurrence during the creation of early computer games, particularly for earlier [[Unix]] [[:Category:Unix games|games]]. These are mostly arcade conversions, parlour games, and text adventures using libraries like [[curses (programming library)|curses]].<ref>{{cite web|last=Allen Holm |first=Joshua |date=2017-06-21|title=Revisit Colossal Cave with Open Adventure |url=https://opensource.com/article/17/6/revisit-colossal-cave-adventure-open-adventure |website=[[Opensource.com]] |access-date=2023-02-05}}</ref><ref>{{cite web|url=http://ligurio.github.io/awesome-ttygames/|title=Unix ASCII games|first=Sergey|last=Bronnikov|website=[[GitHub]]|access-date=2023-03-18}}</ref> A notable example of this is the "[[Berkeley Software Distribution|BSD]] Games", a collection of [[interactive fiction]] and other [[Text-based game|text-mode titles]].<ref>{{cite magazine|last=Gagné|first=Marcel |date=1 September 2000|title=The Ghost of Fun Times Past|url=http://www.linuxjournal.com/article/4169 |magazine=[[Linux Journal]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20110607182135/http://www.linuxjournal.com/article/4169 |archive-date=2011-06-07}}</ref><ref>{{cite web|first=Steven|last=Vona|date=2021-03-11|title=Linux Gaming Old School - Terminal Based Games on Linux |url=https://www.putorius.net/linux-games-old-school-style.html |website=Putorius|access-date=2023-02-18}}</ref> Game fan communities such as the [[Video game modding|modding community]] do include [[Video game modding#Legal status of mods|some aspects]] of free software, such as sharing mods across community sites, sometimes with free to use media made for the modification.<ref>{{cite web|url=https://www.gamedeveloper.com/business/brief-overview-of-the-differences-and-similarities-between-open-source-software-development-and-co-creation-in-digital-games-|title=Brief overview of the differences and similarities between open source software development and co-creation in digital games|first=Jedrzej|last=Czarnota|website=[[Gamasutra]]|date=2013-08-07|access-date=2023-03-11}}</ref>

With [[History of free and open-source software#Initial decline of free software|the rise]] of [[proprietary software]] in the mid to late 1980s, games became more and more proprietary. However, this [[History of free and open-source software#Launch of the free software movement|also led]] to the first deliberately free games such as ''[[GNU Backgammon]]'', ''[[GNU Chess]]'', ''[[GNU Go]]'', and ''[[GNU Shogi]]'' of the [[GNU Project]] established in 1983, part of whose goal is to create a complete free software system, [[List of GNU packages#Games|games included]].<ref>{{cite web|last=Stallman|first=Richard |author-link=Richard Stallman|title=Linux and the GNU System|url=https://www.gnu.org/gnu/linux-and-gnu.html |publisher=[[GNU Project]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20170319145123/http://www.gnu.org/gnu/linux-and-gnu.html |archive-date=2017-03-19 |quote=''Some of our system components, the programming tools, became popular on their own among programmers, but we wrote many components that are not tools. We even developed a chess game, GNU Chess, because a complete system needs games too.''}}</ref> More advanced free gaming projects emerged, such as ''[[Moria (1983 video game)|Moria]]'' and its descendant ''[[Angband (video game)|Angband]]'', ''[[Hack (video game)|Hack]]'' and its derivatives ''[[NetHack]]'' and ''[[Slash'EM]]'', in addition to ''[[Xtrek]]'' successor  ''[[Netrek]]'', variants of ''[[Chase (video game)|robots]]'', and adventure game ''[[Dunnet (video game)|Dunnet]]'', which has been included with [[GNU Emacs]] since 1994 among others.<ref>{{cite web|url=https://www.masteringemacs.org/article/fun-games-in-emacs|website=Mastering Emacs|title=Fun and Games in Emacs|first=Mickey|last=Petersen|date=2022-05-24|access-date=2023-03-18}}</ref><ref>{{cite web|url=https://www.cnet.com/tech/computing/terminal-fun-games-and-more/|title=Terminal fun: Games and more...|website=[[CNET]]|date=2009-09-02|access-date=2023-03-18}}</ref> Still developed and played today, front-ends for frameworks such as [[X11]], [[Simple DirectMedia Layer|SDL]], [[GTK]] and [[Qt (software)|Qt]], plus fuller featured variants such as ''[[Iso-Angband]]'', ''[[glHack]]'' and ''[[Falcon's Eye|Vulture's Eye]]'' have kept the games accessible.<ref>{{cite web |last=Wilson |first=Hamish | date=2023-01-23 | title=Building a Retro Linux Gaming Computer - Part 22: Happy Hacking | url=https://www.gamingonlinux.com/2023/01/building-a-retro-linux-gaming-computer-part-22-happy-hacking | website=GamingOnLinux | access-date=2023-02-02}}</ref><ref>{{cite web |last=Barton |first=Matt | date=2007-11-14 | title=Computer role-playing games for GNU/Linux | url=http://www.freesoftwaremagazine.com/articles/role_playing_games_gnu_linux|archive-url=https://web.archive.org/web/20160319143547/http://www.freesoftwaremagazine.com/articles/role_playing_games_gnu_linux| website=[[Free Software Magazine]] | archive-date=2016-03-19| access-date=2023-02-10}}</ref> [[Roguelike]]s have continued to be produced, including ''[[Cataclysm: Dark Days Ahead]]'', ''[[Tales of Maj'Eyal]]'', ''[[HyperRogue]]'', ''[[DRL (video game)|DRL]]'', ''[[Isleward]]'',<ref>{{cite web |last=Dawe |first=Liam | date=2020-01-28 | title=Isleward - a free and open source cross-platform roguelike MMO | url=https://www.gamingonlinux.com/2020/01/isleward-a-free-and-open-source-cross-platform-roguelike-mmo/| website=GamingOnLinux | access-date=2023-02-07}}</ref> ''[[Egoboo (video game)|Egoboo]]'', ''[[S.C.O.U.R.G.E.]]'',<ref>{{cite web|author=M. Zinoune|title=19 Awesome Open Source Games for Linux|url=https://www.unixmen.com/gaming-on-linux1131-19-awesome-opensource-games-for-linux/|access-date=2023-02-06|website=Unixmen}}</ref> ''[[Shattered Pixel Dungeon]]'',<ref>{{cite web |last=Dawe |first=Liam | date=2022-03-24 | title=Shattered Pixel Dungeon arrives on Steam eight years later | url=https://www.gamingonlinux.com/2022/03/shattered-pixel-dungeon-arrives-on-steam-eight-years-later/| website=GamingOnLinux | access-date=2023-02-06}}</ref> as well as ''[[Linley's Dungeon Crawl]]'' and its offspring ''[[Dungeon Crawl Stone Soup]]''. The source code to the original ''[[Rogue (video game)|Rogue]]'' was released under the [[BSD license]] in 1986.

[[File:Xevil 2 0 beta7 unix.gif|thumb|200px|left|''XEvil'']]

As [[PC gaming]] began to emerge in the late 1980s, free gaming also advanced. More complicated games utilizing the [[X Window System]] for graphics started to appear,<ref>{{cite web|url=http://www.linuxfocus.org/English/November1999/article118.html|title=Tux's secret obsession - Gaming under Linux|website=LinuxFocus|first=Harald|last=Radke|date=5 November 1999|access-date=26 May 2025}}</ref> most beginning with the signature letter X.<ref>{{cite web|first=Ryan|last=Armstrong|url=https://zerker.ca/home/old-x-games.html|title=Old X Games|website=Zerk Zone|date=2020-11-18|access-date=2023-02-14}}</ref> These included ''[[Asteroids (video game)|XAsteroids]]'', ''XBattle'', ''[[Breakout (video game)|XBoing]]'', ''[[Bomberman|X-Bomber]]'', ''[[XConq]]'', ''[[Digger (video game)|XDigger]]'', ''[[Tetris|XEmeraldia]]'', ''[[Galaga|XGalaga]]'', ''[[Backgammon|XGammon]]'', ''[[Lunar Lander (video game genre)|XLander]]'', ''[[Conway's Game of Life|XLife]]'', ''[[Mahjong|XMahjong]]'', ''[[Minesweeper (video game)|XMine]]'', ''XSoldier'', ''[[XPilot]]'', ''[[Chase (video game)|XRobots]]'', ''[[Rubik's Cube|XRubiks]]'', ''[[Shogi|XShogi]]'', ''[[Lode Runner|XScavenger]]'', ''[[Tetris|XTris]]'', ''[[Tron (video game)|XTron]]'', and ''[[Tic-tac-toe|XTic]]''.<ref>{{cite web |last=Wilson |first=Hamish | date=2022-01-10 | title=Building a Retro Linux Gaming Computer - Part 8: Shovelware with a Penguin | url=https://www.gamingonlinux.com/2022/01/building-a-retro-linux-gaming-computer-part-8-shovelware-with-a-penguin/| website=GamingOnLinux | access-date=2023-02-09}}</ref> ''[[XBill]]'' is notable as one of the earliest free gaming titles to feature an activist theme of halting proprietary software adoption, later echoed in titles such as ''[[Virus Killer]]'', ''[[Defendguin]]'' and ''[[FreedroidRPG]]''.<ref>{{cite web|website=[[Linux Journal]]|title=Cooking with Linux - The Game of Security |url=https://www.linuxjournal.com/article/7663|first=Marcel|last=Gagné|date=2004-10-01|access-date=2023-02-10}}</ref> ''XEvil'' followed the development cycle of many early pieces of free software, having originally been developed as a university project on the [[Project Athena]] network, although it was freeware for a while.<ref>{{cite web |last=Wilson |first=Hamish | date=2022-01-31 | title=Building a Retro Linux Gaming Computer - Part 10: For I Have Sinned | url=https://www.gamingonlinux.com/2022/01/building-a-retro-linux-gaming-computer-part-10-for-i-have-sinned/| website=GamingOnLinux | access-date=2023-02-09}}</ref> The game was also one of the first free titles to feature [[video game controversies|controversial subject matter]] such as [[graphic violence]] and [[recreational drug use|drug use]].<ref>{{cite web|title=Entry: XEvil|url=http://www.the-underdogs.info/game.php?id=2709 |website=[[Home of the Underdogs]]|access-date=2022-07-20 |archive-url=https://web.archive.org/web/20070929124027/http://www.the-underdogs.info/game.php?id=2709 |archive-date=2007-09-29}}</ref> ''XTux'' was also an early [[deathmatch (video games)|deathmatch]] game for Linux, featuring various [[List of computing mascots|free software mascot]]s, a theme that would continue to be revisited.<ref>{{cite magazine|last=Gagné|first=Marcel |date=1 March 2000|title=Fun Educational Morsels, Linux-Style |url=https://www.linuxjournal.com/article/3860 |magazine=[[Linux Journal]]|access-date=2023-02-12}}</ref> ''[[Rocks'n'Diamonds]]'' is another earlier free software game, and one of the first for Linux.<ref>{{cite web|author=fervi |date=2017|title=Rocks'n'Diamonds - Libre gaming |url=https://steemit.com/gaming/@fervi/rocks-n-diamonds-libre-gaming |website=Steemit|access-date=2023-02-12}}</ref> Other games targeted or also supported the [[SVGAlib]] library allowing them to run without a [[windowing system]],<ref>{{cite web|url=https://www.developer.com/guides/easy-graphics-a-beginners-guide-to-svgalib/|website=Developer.com|title=Easy graphics: A beginner's guide to SVGAlib|first=Jay|last=Link|date=1999-09-30|access-date=2023-09-29}}</ref> such as ''[[LinCity]]'', ''[[Maelstrom (1992 video game)|Maelstrom]]'', and ''SABRE''.<ref>{{cite web|url=https://linuxgazette.net/issue30/ayers3.html|website=[[Linux Gazette]]|title=Sabre: An Svgalib Flight Sim|first=Larry|last=Ayers|date=1998-07-01|access-date=2023-09-29}}</ref> The [[General Graphics Interface]] was also utilized,<ref>{{cite web|url=https://www.linuxjournal.com/article/160|title=Linux-GGI Project|first=Andreas|last=Beck|date=1996-11-01|access-date=2023-12-20|website=[[Linux Journal]]}}</ref> with games like ''Heroes'',<ref>{{cite web|url=https://discourse.libsdl.org/t/announcing-heroes-0-7/3553|title=Announcing Heroes 0.7|first=Alexandre|last=Duret-Lutz|date=November 2000|website=[[Simple DirectMedia Layer]]}}</ref> ''Thrust'',<ref>{{cite web|url=https://identicalsoftware.com/games/inertiablast|website=Identical Software|first=Dennis|last=Payne|title=Inertia Blast|date=2021-09-19|access-date=2024-01-21 }}</ref> ''U.R.B.A.N The Cyborg Project''<ref>{{cite web |last=Wilson |first=Hamish | date=2024-03-12 | title=Building a Retro Linux Gaming Computer Part 40: The Cyborg Project | url=https://www.gamingonlinux.com/2024/03/building-a-retro-linux-gaming-computer-part-40-the-cyborg-project/ | website=GamingOnLinux | access-date=2024-03-13}}</ref> and ''Dave Gnukem''.<ref>{{cite web|url=https://lwn.net/2000/0106/bigpage.php3|title=Software Announcements|date=2000-01-06|access-date=2024-01-21|website=Linux Weekly News}}</ref>

[[File:Freeciv2 1-beta1Big window.png|right|thumb|200px|''[[FreeCiv]]'']]

The ''[[Freeciv]]'' project was started in 1995 and gave rise to another new style of free game development. Similar to the cooperative nature of the [[Linux kernel]] development, ''Freeciv'' was extended by many volunteers, rather than only one or two authors.<ref>{{cite web|last=Wen|first=Howard |date=21 November 2001|title=Building Freeciv: An Open Source Strategy Game|url=http://www.linuxdevcenter.com/pub/a/linux/2001/11/21/freeciv.html |website=LinuxDevCenter.com|access-date=2009-04-14|archive-url=https://web.archive.org/web/20081229073619/http://www.linuxdevcenter.com/pub/a/linux/2001/11/21/freeciv.html |archive-date=2008-12-29|url-status=dead}}</ref> It had started out as a small university student project but then branched out into its current form and is still being developed today. ''Freeciv'' also proved to be one of the earliest very popular free software games, and was among the first to be included with Linux distributions, a system commonly known now as a source of peer review or selection of quality for free gaming projects. Magazines, news sources and websites have also started noting free games, often in listings.<ref>{{cite web|title=Top 100 Free Linux Games|url=http://www.linuxlinks.com/article/2009020806275229/Top100FreeGames.html |website=LinuxLinks|date=2009-02-08|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100206185745/http://www.linuxlinks.com/article/2009020806275229/Top100FreeGames.html |archive-date=2010-02-06}}</ref><ref>{{cite web|last=Menga|first=Rich |date=6 January 2009|title=16 Free Games - Part 1|url=http://www.pcmech.com/article/16-free-games-part-1/ |website=PCMech|access-date=2022-07-20|archive-url=https://web.archive.org/web/20090622031313/http://www.pcmech.com/article/16-free-games-part-1/ |archive-date=2009-06-22}}</ref><ref>{{cite magazine|last=Sbarski|first=Peter |date=2008-01-21|title=Top 5 best (free) open source games|url=http://apcmag.com/top_5_best_free_open_source_games.htm |magazine=[[APC (magazine)|APC]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100210135624/http://apcmag.com/top_5_best_free_open_source_games.htm |archive-date=2010-02-10|url-status=dead}}</ref><ref>{{cite web|last=Gatlan|first=Sergiu |date=12 November 2008|title=Six Free and Must Have Games for Your Mac|url=http://news.softpedia.com/news/Six-Free-and-Must-Have-Games-for-Your-Mac-96944.shtml |website=[[Softpedia]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20091213203544/http://news.softpedia.com/news/Six-Free-and-Must-Have-Games-for-Your-Mac-96944.shtml |archive-date=2009-12-13}}</ref> ''Freeciv'' and other archetypes have led to the development of many other [[Video game clone|clones of popular proprietary games]].<ref name="Monks">{{cite web|last=Monks|first=Neale |date=2007-11-29|title=Open Source Mac Gaming: 10 Free Games Reviewed|url=http://db.tidbits.com/article/9335 |website=[[Tidbits]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100515150016/http://db.tidbits.com/article/9335 |archive-date=2010-05-15}}</ref><ref>{{cite web|last=Fox|first=Alexander |date=2018-01-05|title=The Best Open Source Clones of Great Old Games|url=https://www.maketecheasier.com/best-open-source-clones-of-great-old-games/ |website=Make Tech Easier|access-date=2023-02-04}}</ref> ''[[Lincity]]'' was also started in 1995, despite there having been a [[Unix]] version of its [[SimCity|namesake]] officially released by DUX Software in 1990.<ref>{{cite web|url=https://www.halolinux.us/red-hat-7-2/lincity.html|title=Lin City|website=Halo Linux Services|date=2022-01-07|access-date=2023-02-12}}</ref>

Beyond directly tying to the operating system, various free game development frameworks emerged starting with [[Allegro (software library)|Allegro]] in 1990, [[Simple DirectMedia Layer|SDL]] in 1998, [[ClanLib]] in 1999, [[OpenAL]] in 2000, [[SFML]] in 2007, as well as SDL 2 and [[Raylib]] in 2013. The [[GNU Image Manipulation Program]], [[MyPaint]], [[Krita]], [[Inkscape]], [[Synfig]], [[Pencil2D]], [[Audacity (software)|Audacity]], [[Rosegarden]], [[MidiEditor]],<ref>{{cite web|url=https://www.musicainformatica.org/resources/editing-your-midi-files-for-free-midieditor.php|title=Editing your Midi files for free: MidiEditor|first=Alex|last=Di Nunzio|date=2014|website=Musica Informatica|access-date=2023-12-08}}</ref> [[OpenShot]], [[Kdenlive]], [[Pitivi]], [[Blender (software)|Blender]], [[MakeHuman]], [[MM3D]],<ref>{{cite web|url=https://nixbit.com/software/misfit-model-3d-review/|title=Misfit Model 3D 1.3.0 review|website=Nixbit|access-date=2023-02-14}}</ref><ref>{{cite web|url=https://software.pureos.net/sw/mm3d.desktop|title=Maverick Model 3D|website=[[PureOS]]|access-date=2023-02-14}}</ref> and other applications have provided an entire open source toolchain for creative projects. Various free software [[emulator]]s and [[compatibility layer]]s have also been produced, such as [[MAME]] and [[MESS]], [[Mednafen]], [[higan (emulator)|higan]], [[Executor (software)|Executor]], [[Darling (software)|Darling]], [[lxrun]], [[Cygwin]], [[Dosbox]], [[ScummVM]], [[Anbox]], [[Wine (software)|Wine]] and [[Proton (software)|Proton]], allowing games to run in new environments (broadly targeted by the [[RetroArch]] front-end).

=== 3D games and source releases ===
[[File:Tuxracer.png|thumb|200px|left|''[[Tux Racer]]'']]
Proprietary games such as ''[[Doom (1993 video game)|Doom]]'' and ''[[Descent (video game)|Descent]]'' brought in the age of three-dimensional games in the early to mid 1990s, and free games started to make the switch themselves. ''[[Tuxedo T. Penguin: A Quest for Herring]]'' by Steve Baker, a game featuring the Linux mascot [[Tux (mascot)|Tux]] and introducing the [[PLIB]] library, was an early example of a three-dimensional free software game.<ref>{{cite web|first=Norbert|last=Cartagena|url=https://www.linux.com/news/linux-and-art-3d-game-programming/|title=Linux and the art of 3D game programming|website=[[Linux.com]]|date=2002-04-17|access-date=2023-02-09}}</ref> He and his son Oliver would later create other popular 3D free games and clones such as ''[[TuxKart]]'' and contribute to those by other developers such as ''[[Tux Racer]]''. ''[[BZFlag]]'' pre-dates all of these, inspired by ''[[Battlezone (1980 video game)|Battlezone]]'' and started in 1992 and released in 1993. ''[[FlightGear]]'', ''[[YSFlight]]'', ''[[ACM (video game)|ACM]]'',<ref>{{cite web|url=https://nixbit.com/software/acm-review/|title=ACM review| access-date=2023-04-23}}</ref> and ''[[GL-117]]''<ref>{{cite web|url=http://blowingupbits.com/2014/02/soaring-like-a-penguin-with-gl-117/|title=Soaring Like A Penguin with GL-117|date=2014-02-15|access-date=2023-02-09|website=Blowing up Bits}}</ref> are also good examples of original 3D games, first started in 1997, 1999 and 2003 respectively (and the latter eventually forked as ''[[Linux Air Combat]]''<ref>{{cite web|url=https://fossgames.com/linux-air-combat-lac-flight-sim/|title=Linux Air Combat – LAC flight Sim |date=2023-01-13|access-date=2023-02-09|website=FOSS Games}}</ref>), especially noting that they are not first-person shooters but [[flight simulator]]s; ''[[Danger from the Deep]]'' meanwhile simulates [[submarine]]s.<ref>{{cite web|author=Maria|date=2008-09-17|title=Top 5 Free Linux Games – Download Now|url=http://www.ixibo.com/2008/09/top-5-free-linux-games-download-now/#comment-3902 |website=ixibo|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100126164648/http://www.ixibo.com/2008/09/top-5-free-linux-games-download-now/ |archive-date=2010-01-26}}</ref>

The [[OpenGL]] specification provided a foundation for [[hardware acceleration]] since 1992, primarily through the free [[Mesa (computer graphics)|Mesa]] implementation since 1995, and later complimented by [[Vulkan]] since 2016.<ref>{{cite web|first=John|last=Mathews|url=https://www.linuxjournal.com/article/4083|title=The Puzzle of 3-D Graphics on Linux |website=[[Linux Journal]]|date=2000-09-01|access-date=2023-02-13}}</ref> The [[Direct3D]] API has also been made available on free operating systems via [[compatibility layer]]s such as [[Wine (software)#Direct3D|WineD3D]] and [[Proton (software)#Overview|DXKV]]. The [[Glide (API)|Glide]] API was also made open source following the dissolution of [[3dfx Interactive|3dfx]] in 2002.

The [[Genesis3D]] engine project, [[Crystal Space]] and ''[[Cube (video game)|Cube]]'' also spawned other 3D free software engines and games, later joined by the likes of [[Retribution Engine|Retribution]],<ref>{{cite web |last=Heng |first=Christopher | date=2022-10-03 | title=Free Game Engines, Programming Libraries and Source Code | url=https://www.thefreecountry.com/sourcecode/games.shtml | website=thefreecountry.com | access-date=2023-02-10|quote=''This is a 3D game engine for Windows first person shooter (FPS) games. It uses OpenGL for hardware accelerated transformation and lighting and DirectSound for music and 3D sound effects. The engine supports particle effects, shaders, glow maps, volumetric fog and explosions, stencil shadows, chrome maps, weather effects, damage decals, etc. It has support for complex 3D models and a wide variety of generic weapon types (melee weapons like a fist, projectile weapons like a laser blaster, exploding projectile weapons like a rocket launcher, instant hit weapons like a pistol, beam weapons like a rail gun, grenades, and shotgun) that can be customised. It also has a scripting engine with a GUI interface that lets you create scripts without learning the scripting language. The engine comes with a variety of tools, including a level editor, a model editor and an episode editor. Also included are some freeware games. The engine is released under the GNU General Public License.''}}</ref> [[Delta3D]], [[Dim3]], [[Neutron (game engine)|Neutron]],<ref>{{cite web|url=https://nixbit.com/software/alpha-shooter-review/|title=Alpha Shooter 0.1 review|website=Nixbit|access-date=2023-03-17}}</ref><ref>{{cite web|url=https://alphashooter.sourceforge.net/|title=Alpha Shooter - A 3D sci-fi First Person Shooter|first=Nicola|last=Cocchiaro|access-date=2023-03-17|website=[[SourceForge]]|quote=''Alpha Shooter is a 3D FPS game with a sci-fi setting, developed by Nicola Cocchiaro and released under the GNU General Public License. It is currently written in C++ and uses its own reusable game engine, named Neutron. The game (and its engine) will evolve to include simulated physics and artificial intelligence, a scripted storyline, involving music and sound effects and more.''}}</ref> [[Lescegra]],<ref>{{cite web|url=https://nixbit.com/software/lescegra-review/|title=Lescegra 20050218 review|website=Nixbit|access-date=2023-03-22}}</ref> [[Raydium (game engine)|Raydium]],<ref>{{cite web|url=https://nixbit.com/software/raydium-review/|title=Raydium 0.680 review|website=Nixbit|access-date=2023-03-22}}</ref> [[Drome Engine]],<ref>{{cite web|url=https://nixbit.com/software/drome-engine-review/|title=Drome Engine 0.3.3 review|website=Nixbit|access-date=2023-03-22}}</ref> [[Vanda Engine|Vanda]],<ref>{{cite web|url=https://www.khronos.org/news/permalink/vanda-engine-1.0.0-beta-is-now-available-for-download|title=Vanda Engine 1.0.0 Beta is now available for download|website=[[Khronos Group]]|date=2013-07-31|access-date=2023-03-25}}</ref> [[Linderdaum]],<ref>{{cite web|url=https://www.khronos.org/news/permalink/linderdaum-engine-supports-blackberry-os-10|title=Linderdaum Engine supports BlackBerry OS 10|website=[[Khronos Group]]|date=2013-01-31|access-date=2023-03-25}}</ref> [[Lumix (game engine)|Lumix]],<ref>{{cite web|url=https://gamefromscratch.com/c-game-engines/|title=C++ Game Engines|website=GameFromScratch|date=2018-09-29|access-date=2023-03-25}}</ref> [[Toy Engine|Toy]],<ref>{{cite web|url=https://www.mycplus.com/featured-articles/toy-game-engine-thin-cpp-game-engine/|website=MYCPlus|title=Toy Game Engine: The Thin C++ Game Engine|first=M.|last=Saqib|date=2022-01-22|access-date=2023-03-25}}</ref> [[ezEngine]],<ref>{{cite web|url=https://gamefromscratch.com/ezengine-free-and-open-source-3d-game-engine/|title=ezEngine Free and Open Source 3D Game Engine|website=GameFromScratch|date=2020-05-22|access-date=2023-03-25}}</ref> [[WickedEngine]],<ref>{{cite web|url=https://gamefromscratch.com/wickedengine-open-source-c-3d-game-engine/|website=GameFromScratch|title=WickedEngine–Open Source C++ 3D Game Engine|date=2019-01-31|access-date=2023-03-25}}</ref> [[Limon (game engine)|Limon]],<ref name="DevGa.me">{{cite web|url=https://devga.me/free/3d-game-engines/|title=3D Game Engines|website=DevGa.me|date=16 October 2018 |access-date=2023-03-25}}</ref> [[Banshee (game engine)|Banshee]],<ref>{{cite web|url=https://www.geckoandfly.com/32489/game-engines/|website=Gecko & Fly|title=12 Free Game Engines For Developing Desktop, Web and Mobile Apps|date=2023-01-29|access-date=2023-03-25}}</ref> [[Esenthel Game Engine|Esenthel]],<ref>{{cite web|url=https://linuxhint.com/open-source-game-engines/|title=Free and Open Source Game Engines for Developing Linux Games|website=Linux Hint|first=Nitesh|last=Kumar|date=2021|access-date=2023-03-25}}</ref> [[Flax (game engine)|Flax]],<ref>{{cite web|url=https://www.phoronix.com/news/Flax-Engine-1.1.6217|website=[[Phoronix]]|first=Michael|last=Larabel|title=Flax Engine 1.1 Released For This Impressive Open-Source 3D Game Engine|date=2021-03-21|access-date=2023-03-25}}</ref> and the [[G3D Innovation Engine]].<ref>{{cite web|url=https://gamefromscratch.com/g3d-innovation-engine/|title=G3D Innovation Engine|website=GameFromScratch|date=2018-05-18|access-date=2023-03-24}}</ref> Engines even exist for [[high-level programming language]]s such as [[Python (programming language)|Python]]<ref>{{cite web|url=https://linuxhint.com/good_3d_python_game_engines/|website=Linux Hint|title=Good 3D Python Game Engines|first=Mats|last=Tage Axelsson|date=2021|access-date=2023-03-28}}</ref> ([[Pyglet]], [[PyOpenGL]],<ref>{{cite web|url=https://www.niit.com/india/knowledge-centre/Python-frameworks-for-game-development|title=Top 9 Python frameworks for Game Development|website=[[NIIT]]|date=2020-12-29|access-date=2023-03-28}}</ref> [[Spineless (video game)|Spineless]],<ref>{{cite web|url=https://nixbit.com/software/spineless-review/|title=Spineless 2006-05-29 review|website=Nixbit|access-date=2023-03-22}}</ref> Soya3D, [[PyUnity]],<ref>{{cite web|url=https://rayzchen.medium.com/pyunity-a-project-of-growth-and-learning-8cf8a312623a|title=PyUnity: a project of growth and learning|website=[[Medium (website)|Medium]]|first=Ray|last=Chen|date=2021-09-13|access-date=2023-03-25}}</ref> [[PyZOE]]<ref>{{cite web|url=https://nixbit.com/software/pyzoe-review/|title=PyZOE 1.0a review|website=Nixbit|access-date=2023-03-22}}</ref>), [[Pascal (programming language)|Pascal]] ([[GLScene]], [[Castle Game Engine|Castle]],<ref>{{cite web|first=Liam |last=Dawe |title=Castle Game Engine building up towards a huge new release |url=https://www.gamingonlinux.com/2022/09/castle-game-engine-building-up-towards-a-huge-new-release/ |website=GamingOnLinux |date=16 September 2022 |access-date=2023-02-11}}</ref> [[nxPascal]],<ref>{{cite web|url=https://www.dunebook.com/best-programing-languages-for-games/|title=20 Best Programming Languages for Game Development|website=Dunebook|first=Olanrewaju|last=Olakunle|date=2022-02-05|access-date=2023-03-25|quote=''Niklaus Wirth is the creator of this language. A lot of game engines like Mingro, Nxpascal, Castle game engines are written in Pascal language.''}}</ref> [[ZenGL]]<ref>{{cite web|url=https://wiki.freepascal.org/ZenGL|website=[[FreePascal]] Wiki|title=ZenGL|access-date=2023-03-25}}</ref>), [[Lua (programming language)|Lua]] ([[LÖVR]],<ref>{{cite web|url=https://gamefromscratch.com/lovr-open-source-3d-framework/|title=LÖVR — Open Source 3D Framework|website=GameFromScratch|date=2021-08-07|access-date=2023-03-22}}</ref> [[LÖVE (game framework)|LÖVE3D]]<ref>{{cite web|url=https://love2d.org/wiki/Love3D|title=LÖVE3D|website=LÖVE Wiki|access-date=2023-03-25}}</ref>), [[Rust (programming language)|Rust]] ([[Amethyst (game engine)|Amethyst]],<ref>{{cite web|url=https://vaporsoft.net/amethyst-series/|title=Experimenting with Amethyst: A Rust game engine|date=2019-06-10|website=Vaporsoft|access-date=2023-03-25}}</ref> [[Bevy (game engine)|Bevy]],<ref>{{cite web|url=https://josephamaurer.medium.com/making-a-game-in-bevy-an-open-source-2d-and-3d-engine-built-on-rust-20fecd090352|first=Joseph|last=Maurer|date=2021-04-15|access-date=2023-03-23|title=Making a game in Bevy: An open-source 2D and 3D engine built on Rust|website=[[Medium (website)|Medium]]}}</ref> [[Fyrox]],<ref>{{cite web|url=https://gamefromscratch.com/fyrox-game-engine-rust-powered-rg3d-renamed/|title=Fyrox Game Engine — Rust Powered RG3D Renamed|website=GameFromScratch|date=2022-01-10|access-date=2023-03-25}}</ref> [[Piston (framework)|Piston]]<ref>{{cite web|url=https://blog.logrocket.com/5-rust-game-engines-consider-next-project/|first=Victor|last=Jonah|title=5 Rust game engines to consider for your next project|date=2022-05-20|access-date=2023-03-26}}</ref>), [[Zig (programming language)|Zig]] ([[Mach (game engine)|Mach]]<ref>{{cite web|url=https://devlog.hexops.com/2021/mach-engine-the-future-of-graphics-with-zig/|title=Mach Engine: The future of graphics (with Zig)|website=HexOps devlog|date=2021-10-17|access-date=2024-05-27}}</ref>), [[Java (programming language)|Java]]<ref>{{cite web|url=https://coding-guru.com/java-3d-game-engine/|archive-url=https://web.archive.org/web/20201030135541/http://coding-guru.com/java-3d-game-engine/|url-status=usurped|archive-date=30 October 2020|title=Java 3D Game Engine|website=Coding Guru|date=2014-04-21|access-date=2023-03-25}}</ref> ([[libGDX]], [[Jake2]], [[jMonkeyEngine]],<ref>{{cite web|url=https://gamefromscratch.com/a-closer-look-at-jmonkeyengine/|title=A Closer Look at jMonkeyEngine|website=GameFromScratch|date=2015-08-31|access-date=2023-03-24}}</ref> [[Env3D]]<ref>{{cite web|url=https://www.researchgate.net/publication/247930830|title=Learn Java in 3D with the Env3D library|date=May 2010|first=Jason|last=Madar|access-date=2023-03-25}}</ref>), [[Kotlin (programming language)|Kotlin]] ([[KorGE]],<ref>{{cite web|url=https://gamefromscratch.com/korge-engine-kotlin-powered-open-source-game-engine/|title=Korge Engine — Kotlin Powered Open Source Game Engine|website=GameFromScratch|date=2021-01-26|access-date=2023-03-26}}</ref> [[MiniGDX]]<ref name="gamefromscratch.com">{{cite web|url=https://gamefromscratch.com/minigdx-kotlin-game-development-framework/|title=MiniGDX Kotlin Game Development Framework|date=2021-05-14|website=GameFromScratch|access-date=2023-03-26}}</ref>), [[Go (programming language)|Go]]<ref>{{cite web|url=https://golang.company/blog/top-10-golang-game-development-libraries|title=Top 10 Golang Game Development Libraries|first=Soham|last=Mukherjee|website=Golang Blog|access-date=2023-03-26}}</ref> ([[Azul3D]],<ref>{{cite web|url=https://devlog.hexops.com/2021/increasing-my-contribution-to-zig-to-200-a-month/|title=My game development journey|first=Stephen|last=Gutekanst|website=Hexops|date=2021-04-10|access-date=2023-03-25|quote=''I spent the next 4 years of my life, almost 100% full-time working on Azul3D, a game engine in Go - and spent only minimal time attending online community college on the weekends.''}}</ref> [[G3N]]<ref>{{cite web|url=https://siit.co/blog/best-golang-libraries-for-game-development/5298|title=Best Golang Libraries For Game Development|website=SIIT - Scholars International Institute Of Technology|access-date=2023-03-26}}</ref>), [[Ruby (programming language)|Ruby]] ([[Candy Gear]]<ref>{{cite web|url=https://rubykaigi.org/2023/presentations/fredolinhares.html|title=High-performance real-time 3D graphics with Vulkan|first=Frederico|last=Linhares|website=Ruby Kaigi|date=2023-06-09|access-date=2024-01-30}}</ref>), [[Gambas]] ([[PS Tech]]<ref>{{cite web|url=https://archive.org/details/hedged-1.2|title=Hedged 1.2|website=[[Internet Archive]] [[Internet Archive#Software|Community Software]]|date=31 May 2021 |access-date=2023-03-25|quote=''It was written in Gambas 3.15.2 and uses Qt 5 for interfaces, SDL 2 for audio and OpenGL 2.1 for rendering. Created in six days, it features a beta version of the second revision of the PS Tech engine.''}}</ref>) [[FreeBASIC]] ([[OpenB3D]]<ref>{{cite web|url=http://back2basic.phatcode.net/?Issue-%236/Blitz3D-Legacy%3A-History-Repeats|title=Blitz3D Legacy: History Repeats|website=Back2BASIC|author=((angros47))|date=May 2012|access-date=2023-03-26}}</ref>) in addition to [[ActionScript]] ([[Away3D]]), [[Haxe]] ([[Heaps.io]],<ref>{{cite web|url=https://blog.rbansal.dev/gamedev-heaps-and-haxe/|title=2D Game Development with Heaps.io and Haxe|date=2020-05-25|first=Rohan|last=Bansal|access-date=2023-03-25}}</ref> [[Kha (game engine)|Kha]]<ref>{{cite web|title=Indepth look at 2D game engines for Haxe|url=https://dewitters.com/indepth-look-at-2d-game-engines-for-haxe/|first=Koen|last=Witters|date=2017-09-06|access-date=2023-03-26}}</ref>) and [[JavaScript]] ([[Babylon.js]], [[Three.js]]) [[List of WebGL frameworks|using]] [[WebGL]].<ref>{{cite web|url=https://noeticforce.com/best-3d-javascript-game-engines-frameworks-webgl-html5|title=Top 10 HTML5, JavaScript 3D Game Engines and Frameworks|author=noeticsunil|website=NoeticForce|date=2022-02-19|access-date=2023-03-25}}</ref><ref>{{cite web|url=https://code.tutsplus.com/articles/best-free-open-source-javascript-game-engines-and-libraries--cms-38277|title=8 Best Free and Open-Source JavaScript Game Engines|first=Monty|last=Shokeen|website=evanto tuts+|date=2021-09-26|access-date=2023-03-25}}</ref><ref>{{cite web|url=https://www.geeksforgeeks.org/8-best-javascript-game-engines/|title=8 Best Javascript Game Engines|website=GeeksforGeeks|date=2023-08-02|access-date=2023-03-26}}</ref> Several engines exist with rendering in [[Low-level programming language|low-level]] [[C (programming language)|C]] or [[C++]] with higher level scripting, such as [[Panda3D]] and [[Ursina (game engine)|Ursina]]<ref>{{cite web|url=https://gamefromscratch.com/ursina-engine/|title=Ursina Engine|website=GameFromScratch|date=2020-01-27|access-date=2023-03-24}}</ref> for Python, [[Basic4GL]], and [[Maratis]],<ref>{{cite web|url=https://www.gamingonlinux.com/2014/03/maratis-another-opensource-game-engine/|title=Maratis Another Open-Source Game Engine|first=Liam|last=Dawe|date=2014-03-23|access-date=2023-03-25}}</ref> [[Polycode]],<ref>{{cite web|url=https://narrasoft.com/the-top-3-three-c-plus-plus-plusplus-cpp-cplusplus-2d-game-engines-2021/|title=C++ 2D Game Engines that Make Game Development Easy & Enjoyable|website=NarraSoft|first=Justine|last=Jordan|date=2021-08-12|access-date=2023-03-26}}</ref> and Cafu for Lua, or offering a variety of language binding options such as [[Cocos2d|Cocos3D]],<ref>{{cite web|website=nCircle Tech|url=https://ncircletech.com/blogs/think-youre-cut-out-for-doing-cocos3d|title=Think You're Cut out for Doing Cocos3D?|date=2020-01-01|access-date=2023-03-25}}</ref> [[Horde3D]], [[Delta Engine]],<ref>{{cite web|url=https://www.mycplus.com/featured-articles/delta-engine/|title=Delta Engine – 2D and 3D Application Engine written in C++|website=MYCPLUS|first=M.|last=Saqib|date=2021-12-21|access-date=2023-03-26|quote=''Furthermore, the Delta Engine can be easily transformed between Java C++, C#, Objective-C and JavaScript. This makes it ultimately a cross platform Game Engine.''}}</ref> [[HARFANG3D]],<ref>{{cite web|url=https://geekflare.com/python-game-development-libraries-frameworks/|website=Geekflare|first=Bala|last=Priya|date=2023-01-15|access-date=2023-03-26|title=9 Best Python Game Development Libraries/Frameworks}}</ref> [[OGRE]] and the [[Irrlicht Engine]]. The games ''[[Yo Frankie!]]'' and ''[[Sintel The Game]]'' were developed by the [[Blender Foundation]] to showcase the abilities of the [[Blender (software)|Blender]] modelling tool and the erstwhile [[Blender Game Engine]], which has since been [[fork (software development)|forked]] as UPBGE.<ref>{{cite web|url=https://gamefromscratch.com/upbge-blender-game-engine-0-36-released/|title=UPBGE Blender Game Engine 0.36 Released|website=GameFromScratch|date=2023-06-10|access-date=2023-09-15}}</ref> Blender is also utilized by [[Urho3D]]/[[U3D (game engine)|U3D]]<ref>{{cite web|url=https://gamefromscratch.com/a-closer-look-at-the-urho3d-game-engine/|title=A closer look at the Urho3D Game Engine|website=GameFromScratch|date=2014-10-16|access-date=2023-03-24}}</ref><ref>{{cite web|url=https://gamefromscratch.com/urho3d-is-dead-ish/|title=Urho3D Is Dead…ish|website=GameFromScratch|date=2023-01-23|access-date=2023-03-25}}</ref> and [[Armory (game engine)|Armory]].<ref>{{cite web|url=https://conceptartempire.com/free-game-engines/|title=Top 12 Free Game Engines For Beginners & Experts Alike|website=Concept Art Empire|first=Josh|last=Petty|date=24 December 2018 |access-date=2023-03-25}}</ref> Since May 2023, the [[GDevelop]] tool allows low to no code 3D game creation.<ref>{{cite web|url=https://gamefromscratch.com/gdevelop-engine-adds-3d-support/|title=GDevelop Engine Adds 3D Support|website=GameFromScratch|date=2023-05-18|access-date=2023-08-20}}</ref>

[[File:GL-117.png|thumb|right|200px|''GL-117'']]

[[id Software]], an [[id Software#Linux gaming|early entrant]] into commercial [[Linux gaming]], would also prove to be an [[John Carmack#Open-source software|early supporter]] of free gaming when [[John Carmack]] released the source code for ''[[Wolfenstein 3D engine|Wolfenstein 3D]]'' in 1995 and ''[[Doom engine|Doom]]'' in 1997, first under a custom license and then later the [[GNU General Public License]] (GPL) in 1999 (later termed [[id Tech 1]]). This was followed by the release of [[Quake engine|''Quake'' engine]] in 1999, the [[Quake II engine|''Quake II'' engine]] in 2001 (both known as [[id Tech 2]]), [[id Tech 3]] in 2004 and most recently [[id Tech 4]] in 2011 (including the updated version from the ''[[Doom 3: BFG Edition]]'' in 2012) before Carmack left id in 2013.<ref name="DevGa.me" />

id Tech 4 was released as free software, even amongst patent concerns from [[Creative Labs]] over [[Carmack's reverse]],<ref>{{cite web|last=Kepley |first=Travis |date=2011-11-30|title=How we almost lost Doom 3 and id for good | url=https://opensource.com/life/11/11/we-almost-lost-doom-3-id-for-good |website=[[Opensource.com]]|access-date=2023-03-10}}</ref> while the original ''Doom'' source release shipped without music due to complications with the [[Cygnus Studios]] developed DMX library (which lead to the [[Linux]] [[List of Doom ports#Linux|version]] being selected for release).<ref>{{cite web |last=Wilson |first=Hamish | date=2022-03-14 | title=Building a Retro Linux Gaming Computer - Part 16: We Are All Doomed | url=https://www.gamingonlinux.com/2022/03/building-a-retro-linux-gaming-computer-part-16-we-are-all-doomed/ | website=GamingOnLinux | access-date=2023-02-02}}</ref> Carmack has continued to advise developers to be careful when depending on middleware, noting how it can limit the possibilities of later releasing source code.<ref>{{cite web |last=Plunkett |first=Luke | date=2023-02-12 | title=As More Games Disappear Forever, John Carmack Has Some Great Advice About Preservation | url=https://kotaku.com/vr-meta-facebook-carmack-shutdown-failure-close-echo-1850076140 | website=[[Kotaku]] | access-date=2023-02-10}}</ref> [[Tim Sweeney (game developer)|Tim Sweeney]] has implied this issue has hindered potential releases of older [[Unreal Engine]] source code.<ref>{{cite web |last=Papadopoulos |first=John | date=2015-01-19 | title=Epic's Tim Sweeney Says That Unreal Engine 1 May One Day Go Open Source | url=https://www.dsogaming.com/news/epics-tim-sweeney-says-that-unreal-engine-1-may-one-day-go-open-source/ | website=DSOGaming | access-date=2023-02-10}}</ref> The [[Godot (game engine)|Godot]], [[Nebula Device]], [[Plasma (game engine)|Plasma]], [[Torque (game engine)|Torque]],<ref>{{cite web|url=https://www.shacknews.com/article/75700/torque-3d-engine-going-open-source-and-free|title=Torque 3D engine going open-source and free|first=Alice|last=O'Conner|website=[[Shacknews]]|date=2012-09-11|access-date=2023-03-20}}</ref> [[Bork3D Game Engine|Bork3D]], [[Stride (game engine)|Stride]], [[PlayCanvas]], [[Dagor Engine]],<ref>{{cite web|title=War Thunder game engine Dagor Engine from Gaijin now open source|url=https://www.gamingonlinux.com/2023/11/war-thunder-game-engine-dagor-engine-from-gaijin-now-open-source/|first=Liam|last=Dawe|website=GamingOnLinux|access-date=2023-11-07|date=2023-11-01}}</ref><ref>{{cite web|url=https://gameworldobserver.com/2023/11/03/gaijin-entertainment-dagor-engine-open-source-russian-nau-engine|title=Gaijin Entertainment open-sources its Dagor Engine, surprised to see Russian Nau Engine using parts of it|first=Evgeny|last=Obedkov|website=Game World Observer|date=2023-11-03|access-date=2023-11-07}}</ref> and [[Defold]]<ref>{{cite web | url = https://www.gamasutra.com/view/news/363208/King_has_open_sourced_and_relinquished_control_of_the_Defold_game_engine.php | title = King has open sourced and relinquished control of the Defold game engine | first = Chris | last = Kerr | date = May 19, 2020 | access-date = May 19, 2020 | work = [[Gamasutra]] | archive-date = 26 May 2020 | archive-url = https://web.archive.org/web/20200526043348/https://www.gamasutra.com/view/news/363208/King_has_open_sourced_and_relinquished_control_of_the_Defold_game_engine.php | url-status = dead }}</ref> engines were also initially commercial and proprietary, while the [[Open 3D Engine]] is derived from released code from [[Amazon Lumberyard]] originally based on [[CryEngine]].<ref>{{cite web|url=https://venturebeat.com/2021/07/06/amazons-lumberyard-becomes-an-open-source-3d-game-engine-with-support-from-20-companies/|title=Amazon shifts Lumberyard to open source 3D game engine supported by 20 companies|publisher=VentureBeat|date=July 6, 2021|first=Dean|last=Takahashi}}</ref>

[[File:Tremulous - human base goons.jpg|thumb|left|''[[Tremulous]]'']]

This led not only to [[source port]]s that allowed the playing of the non-free games based on these engines<ref>{{cite web|url=https://www.howtogeek.com/335259/the-best-modern-open-source-ports-of-classic-games/|title=The Best Modern, Open Source Ports of Classic Games|website=How-To Geek|first=Michael|last=Crider|date=2017-12-24|access-date=2023-03-20}}</ref> (plus fan added enhancements)<ref>{{cite web|last=Chakraborty|first=Angsuman |date=20 August 2007|title=How To Play Doom, Heretic, Hexen & Strife in Linux (Free)|url=http://tech.gaeatimes.com/index.php/archive/how-to-play-doom-heretic-hexen-strife-in-linux-free/ |website=The Gaea Times|access-date=2022-07-20|archive-url=https://web.archive.org/web/20120415141519/http://tech.gaeatimes.com/index.php/archive/how-to-play-doom-heretic-hexen-strife-in-linux-free/ |archive-date=2012-04-15}}</ref> on free engines and systems, but has also to the production of standalone free games.<ref>{{cite web|author=MrCopilot |date=17 December 2007|title=Free Quake: Open Source Gamer's Guide to Free Games |url=http://voices.yahoo.com/free-quake-open-source-gamers-guide-free-games-701187.html|website=[[Yahoo! Voices]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20140619143824/http://voices.yahoo.com/free-quake-open-source-gamers-guide-free-games-701187.html|archive-date=2014-06-19|url-status=dead}}</ref> These include ''[[Freedoom]]'', ''[[Doom modding#Freedoom|Blasphemer]]'', ''[[Quake modding#Quake|Open Quartz]]'', ''[[Quake modding#Quake|LibreQuake]]'', ''[[Nexuiz]]''/''[[Xonotic]]'', ''[[Tremulous]]''/''[[Unvanquished (video game)|Unvanquished]]'', ''[[Quetoo]]'',<ref>{{cite web|first=Liam |last=Dawe |title=Quetoo, a free and open source FPS is looking to get on Steam |url=https://www.gamingonlinux.com/2017/02/quetoo-a-free-and-open-source-fps-is-looking-to-get-on-steam/ |website=GamingOnLinux |date=8 February 2017 |access-date=2023-02-07}}</ref> and ''[[OpenArena]]'' on [[id Tech]], plus ''[[Terminal Overload]]''<ref>{{cite web|url=https://www.linuxlinks.com/terminal-overload-home-made-experimental-multiplayer-fps-game/|title=Terminal Overload|website=LinuxLinks|access-date=2023-03-15}}</ref> and ''[[Uebergame]]''<ref>{{cite web|first=Liam |last=Dawe |title=Uebergame, a free and open source shooter has a new release |url=https://www.gamingonlinux.com/2017/09/uebergame-a-free-and-open-source-shooter-has-a-new-release/ |website=GamingOnLinux |date=26 September 2017 |access-date=2023-02-07}}</ref> on Torque. Freeware games, such as ''[[Harmony (video game)|Harmony]]'',<ref>{{cite web|website=[[Rock Paper Shotgun]]|first=Kieron|last=Gillen|url=https://www.rockpapershotgun.com/harmony-in-my-head-harmony|title=Harmony in My Head: Harmony|date=2009-11-18|access-date=2023-02-22}}</ref> ''[[The Adventures of Square]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2018/04/the-adventures-of-square-is-mildly-amusing-retro-fps-thats-free-with-a-second-episode-out-now/|title=The Adventures of Square is mildly amusing retro FPS that's free with a second episode out now|date=2018-04-19|access-date=2023-02-19}}</ref> ''[[The Hunted Chronicle 2]]'',<ref>{{cite web|url=https://nixbit.com/software/the-hunted-chronicle-review/|title=The Hunted Chronicle 2 review | website=Nixbit | access-date=2023-04-23 }}</ref> ''[[Force: Leashed]]'',<ref>{{cite web|url=https://jayisgames.com/review/force-leashed.php|website=Jay Is Games|title=Force: Leashed|author=Tricky|date=2012-08-25|access-date=2023-04-24}}</ref> ''[[Retro Blazer]]'',<ref>{{cite web|url=https://www.tigsource.com/2012/01/16/retroblazer-alpha/|website=TIG Source|title=RetroBlazer (Alpha)|first=Derek|last=Yu|date=2012-01-16|access-date=2023-04-24}}</ref> ''[[Alien Arena (video game)|Alien Arena]]'', ''[[World of Padman]]'', and ''[[Urban Terror]]'',<ref>{{cite web|author=Sepht |date=2007-12-29|title=Comparison of free software shooters |url=http://www.linux-gamers.net/smartsection.item.81/comparison-of-free-software-shooters.html |website=linuX-gamers.net|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100107023339/http://www.linux-gamers.net/smartsection.item.81/comparison-of-free-software-shooters.html |archive-date=2010-01-07|url-status=dead}}</ref> have also taken advantage of these free engines and sometimes have given code back to the community. Development and editing tools are also commonly released freely, such as [[GtkRadiant]],<ref>{{cite web|title=GPL GtkRadiant|url=http://www.bluesnews.com/cgi-bin/board.pl?action=viewstory&threadid=64683 |website=Blue's News|date=18 February 2006|access-date=20 July 2022}}</ref> [[Qoole]], [[Doom Builder]], [[LibreSprite]],<ref>{{cite web|url=https://connectwww.com/libresprite-animated-sprite-editor-and-pixel-art-tool/63386/|title=LibreSprite Animated Sprite Editor and Pixel Art Tool|author=Manikandan|website=connectWWW.com|date=2021-10-11|access-date=2023-02-12}}</ref> Ogmo,<ref>{{cite web|url=https://gamefromscratch.com/ogmo-level-editor/|title=OGMO Level Editor|website=GameFromScratch|date=2019-11-18|access-date=2023-09-17}}</ref> LDtk,<ref>{{cite web|url=https://www.gamingonlinux.com/2022/03/free-and-open-source-level-designer-ldtk-10-is-out-now/|title=Free and open source level editor LDtk 1.0 is out now|first=Liam|last=Dawe|website=GamingOnLinux|date=2022-03-30|access-date=2023-02-06}}</ref> LevelEditor,<ref>{{cite web|url=https://www.phoronix.com/news/MTc3OTc|title=Sony Open-Sources A Universal Game Level Editor|first=Michael|last=Larabel|website=[[Phoronix]]|date=2014-09-03|access-date=2023-09-17}}</ref> Tile Studio, and [[Tiled]].<ref>{{cite web|first=Theodore|last=McKenzie|title=Tiled: A Flexible and Free-to-Use Level Editor|url=https://80.lv/articles/tiled-a-flexible-and-free-to-use-level-editor|date=2021-06-21|access-date=2023-02-05|website=80LV}}</ref><ref>{{cite web|first=Nick|last=Bruner|title=Introduction to Tiled Map Editor: A Platform-Agnostic Tool for Level Maps|url=https://gamedevelopment.tutsplus.com/tutorials/introduction-to-tiled-map-editor-a-platform-agnostic-tool-for-level-maps--gamedev-2838|date=2012-12-10|access-date=2023-02-05|website=80LV}}</ref> Released engines have also been used for [[fangames]] such as ''[[Sonic 3D Blast|Sonic Robo Blast 2]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/05/check-out-sonic-robo-blast-2-a-3d-open-source-sonic-the-hedgehog-fangame-built-from-doom/|title=Check out Sonic Robo Blast 2, a 3D open-source Sonic the Hedgehog fangame built from Doom|date=2021-05-11|access-date=2023-02-19}}</ref> ''[[Wolfenstein 3D|Wolfenstein: Blade of Agony]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/07/wolfenstein-blade-of-agony-gets-another-big-update-in-the-31-release/|title=Wolfenstein - Blade of Agony gets another big update in the 3.1 release|date=2021-06-13|access-date=2023-02-19}}</ref> ''[[Alien Breed 3D#Legacy|Project Osiris]]'',<ref>{{cite web|url=https://www.dsogaming.com/news/someone-has-created-a-alien-breed-3d-remake-in-gzdoom-and-you-can-download-it-right-now/|title=Someone has created an Alien Breed 3D Remake in GZDoom, and you can download it right now|date=2020-03-16|access-date=2024-06-22|first=John|last=Papadopoulos|website=DSOGaming}}</ref> ''[[Blood (video game)#Legacy|ZBlood/Transfusion]]'',<ref>{{cite web|url=https://linuxgamingnews.org/2009/11/09/i-live-again/|title=I Live, Again...|first=Maxim|last=Bardin|website=Linux Gaming News|date=2009-11-09|access-date=2023-02-19}}</ref> ''[[Superhot|SUPERQOT]]'',<ref>{{cite web |last=Smith |first=Graham | date=2015-04-29 | title= SUPERQOT: Play Quake With SUPERHOT's Time Mechanic | url=https://www.rockpapershotgun.com/superqot-superhot | website=[[Rock Paper Shotgun]] | access-date=2023-06-25}}</ref> and ''[[Doom (2016 video game)|Slayer's Testament]]'',<ref>{{cite web |last=Papadopoulos |first=John | date=2021-01-29 | title=Slayer's Testament is a Doom 2016/Eternal Demake in the Quake Engine | url=https://www.dsogaming.com/news/slayers-testament-is-a-doom-2016-eternal-demake-in-the-quake-engine/ | website=DSOGaming | access-date=2023-06-25}}</ref> and even commercial games such as ''[[Wrath: Aeon of Ruin]]'', ''[[Steel Storm]]'', and ''[[Doombringer (video game)|DOOMBRINGER]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/06/doombringer-is-a-new-first-person-shooter-veterans-of-the-doom-and-quake-communities/|title=DOOMBRINGER is a new first-person shooter from veterans of the Doom and Quake communities|date=2021-07-09|access-date=2023-02-19}}</ref> on the [[DarkPlaces engine]], as well as ''[[Hedon (video game)|Hedon]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2019/03/hedon-another-retro-fps-using-the-gzdoom-game-engine-is-officially-out/|title=Hedon, another retro FPS using the GZDoom game engine is officially out|date=2019-03-26|access-date=2023-02-19}}</ref> ''[[Selaco]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/08/its-hard-to-believe-selaco-is-running-on-gzdoom-in-the-latest-3-minute-trailer/|title=It's hard to believe Selaco is running on GZDoom in the latest 3 minute trailer|date=2021-08-16|access-date=2023-02-19}}</ref> ''[[Vomitoreum]]'',<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/08/vomitoreum-is-a-fps-metroidvania-with-a-sprinkle-of-horror-out-now/|title=Vomitoreum is a FPS Metroidvania with a sprinkle of horror out now|date=2021-08-03|access-date=2023-02-19}}</ref> and ''[[Supplice]]''<ref>{{cite web|url=https://www.pcgamer.com/supplice-is-a-new-retro-fps-made-by-doom-modders-and-it-really-feels-like-old-school-doom/|website=[[PC Gamer]]|title=Supplice is a new retro-FPS made by Doom modders, and it really feels like old-school Doom|first=Andy|last=Chalk|date=2023-04-06|access-date=2023-04-13}}</ref> on the [[GZDoom]] engine and also titles by [[Blendo Games]] on the [[id Tech 2]] and [[id Tech 4]] engines. The games ''[[Ion Fury]]'' and ''[[AWOL (video game)|A.W.O.L]]'' are built on the [[source available]] [[Build (game engine)|Build]] engine,<ref>{{cite web|first=Liam |last=Dawe |title=A.W.O.L. is a new FREE retro FPS using the Build Engine (Duke Nukem 3D, Ion Fury) |url=https://www.gamingonlinux.com/2022/09/awol-is-a-new-free-retro-fps-using-the-build-engine-duke-nukem-3d-ion-fury/ |website=GamingOnLinux |date=2022-09-16 |access-date=2023-03-15}}</ref> and ''[[Excalibur: Morgana's Revenge]]'' on [[Aleph One (game engine)|Aleph One]]. ''[[Liblast]]'' is an open source multiplayer first-person shooter built using the [[Godot (game engine)|Godot]] game engine.<ref>{{cite web|url=https://gamefromscratch.com/liblast-godot-based-open-source-team-fortress-style-game/|title=Liblast – Godot Based Open Source Team Fortress Style Game|website=GameFromScratch|date=2023-08-17|access-date=2023-09-16}}</ref>

[[File:BOEcombat1.png|thumb|right|200px|''[[Blades of Exile]]'']]

id partners and related, such as [[Raven Software]], [[Bungie]], [[Volition (company)|Volition]], [[GarageGames]], [[Cyan Worlds]], and [[3D Realms]], as well as Two Tribes,<ref>{{cite web|url=https://www.nintendolife.com/news/2021/12/two-tribes-makes-its-impressive-game-engine-open-source|title=Two Tribes Makes Its Impressive Game Engine Open Source|first=Thomas|last=Whitehead|date=2021-12-20|access-date=2023-03-25|website=[[Nintendo Life]]}}</ref> [[Pangea Software]], former developers from [[Capstone Software]], [[Breathless (video game)|Fields of Vision]], [[Cytadela (video game)|Virtual Design]], and [[Gloom (video game)|Black Magic Software]], and several of the developers who participated in the [[Humble Indie Bundle]],<ref>{{cite web|last=Blankenhorn|first=Dana |date=14 May 2010|title=Open source can juice the video game market|url=http://www.zdnet.com/blog/open-source/open-source-can-juice-the-video-game-market/6477 |website=[[ZDNet]] |access-date=2022-07-20|archive-url=https://web.archive.org/web/20100630103353/http://www.zdnet.com/blog/open-source/open-source-can-juice-the-video-game-market/6477 |archive-date=2010-06-30}}</ref> have also [[:Category:Commercial video games with freely available source code|released code]] and it is now accepted practice for some mainstream game developers to release legacy source code.<ref name="Monks" /> [[:Category:Formerly proprietary software|Formerly proprietary]] games such as ''[[Jump 'n Bump]]'', ''[[Dink Smallwood]]'', ''[[Clonk]]'', ''[[Seven Kingdoms (video game)|Seven Kingdoms]]'', ''[[AstroMenace]]'', ''[[Warzone 2100]]'', ''[[Glitch (video game)|Glitch]]'', ''[[Maelstrom (1992 video game)|Maelstrom]]'', ''[[Planet Blupi]]'',<ref>{{cite web|url=https://connectwww.com/planet-blupi-strategy-and-adventure-game-how-to-install-planet-blupi-on-ubuntu/61182/|title=Planet Blupi Strategy and Adventure Game – How to install Planet Blupi on ubuntu|author=Manikandan|website=connectWWW.com|date=2019-11-21|access-date=2023-02-12}}</ref> ''[[Avara]]'', ''[[Eat the Whistle]]'',<ref>{{cite web|url=https://nixbit.com/software/eat-the-whistle-review/|title=Eat The Whistle 3.2 review|website=Nixbit|access-date=2023-02-11}}</ref> ''[[Blades of Exile]]'', ''[[The Ur-Quan Masters|Star Control 2]]'', ''[[Micropolis (video game)|SimCity]]'', ''[[Fish Fillets NG|Fish Fillets]]'', ''[[HoverRace]]'', ''[[Duelyst]]'', as well ''[[Abuse (video game)|Abuse]]'' and the unfinished ''[[Golgotha (video game)|Golgotha]]'' have even been entirely released freely, including multimedia assets and levels.<ref>{{cite web|last=Suehle |first=Ruth |date=2014-02-11|title=Creative Commons enables the return of the game Glitch |url=https://opensource.com/life/14/2/creative-commons-enables-return-glitch |website=[[Opensource.com]] |access-date=2023-02-05}}</ref>

Some games are mostly free software but contain proprietary content such as the ''Cube'' sequel, ''[[Cube 2: Sauerbraten|Sauerbraten]]'' (and [[Cube 2: Sauerbraten#Derivatives and forks|later forks]], but not ''[[Red Eclipse]]''), ''[[Warsow (video game)|Warsow]]'' / ''[[Warfork]]'', or the former [[id Tech]] mods ''[[The Dark Mod]]'' and ''[[Smokin' Guns]]'', but some developers desire and/or work on replacing these with free content.<ref>{{cite web|author=lululaglue|date=2009-06-24|title=Entretien avec l'équipe de Smokin'Guns|url=http://www.jeuxlinux.fr/a269-Entretien_avec_lequipe_de_SmokinGuns.html|website=Jeuxlinux|language=fr|access-date=2010-01-05|quote=''Alas, artists are always conservative for their creations. For me, the most important thing was to have the code under a free license... it always leaves the opportunity for other creators to take over the game with new data, but it's a hell of a job! Honestly, I am for free, but free is not always the panacea and our creators do not want to find their babies anywhere without their consent. Anyone today who wants to offer free content to replace cc licensed content with better quality will be welcomed with open arms as a possible future team member :D And anyone who wants to use our content for another project is safe ask permission on our forum.''|archive-date=19 March 2021|archive-url=https://web.archive.org/web/20210319053021/https://www.jeuxlinux.fr/a269-Entretien_avec_lequipe_de_SmokinGuns.html|url-status=dead}}</ref><ref>{{cite web|first=Liam |last=Dawe |title=Based on the classic FPS Warsow, the new Warfork is now live in Early Access |url=https://www.gamingonlinux.com/2019/08/based-on-the-classic-fps-warsow-the-new-warfork-is-now-live-in-early-access/ |website=GamingOnLinux |date=19 August 2019 |access-date=2023-02-07}}</ref> Mods for originally proprietary games have gone standalone following the source code being released for their parent game, such as ''[[Nexuiz]]'' for ''[[Quake (video game)|Quake]]'', ''[[CodeRED: Alien Arena]]'' for ''[[Quake II]]'', and ''[[Urban Terror]]'' for ''[[Quake III]]'', as well as ''[[Penumbra: Necrologue]]'' for ''[[Amnesia: The Dark Descent]]''. Derivatives of released code or recreations have even been used for commercial re-releases of vintage games such as ''[[Wolfenstein 3D|Wolfenstein 3D Classic]]'' for [[iOS]],<ref>{{cite web|archive-url=https://web.archive.org/web/20230331132510/https://www.discovermagazine.com/mind/wolfenstein-old-code-never-dies|archive-date=31 March 2023|url=https://www.discovermagazine.com/mind/wolfenstein-old-code-never-dies|title=Wolfenstein: Old Code Never Dies|first=Stephen|last=Cass|website=[[Discover Magazine]]|date=2009-04-07|access-date=2023-02-19}}</ref> ''[[Abuse (video game)|Abuse Classic]]'' for [[iPhone]], ''[[Marathon 2: Durandal]]'' for [[Xbox Live Arcade]],<ref>{{cite web|url=https://www.gamedeveloper.com/business/postmortem-freeverse-s-marathon-2-durandal|title=Postmortem: Freeverse's Marathon 2: Durandal|first=Mark|last=Levin|date=2007-11-20|access-date=2024-07-03|website=[[Game Developer (website)|Game Developer]]}}</ref> ''[[Duke Nukem 3D: Megaton Edition]]'',<ref>{{cite web|url=https://spiderslash.com/2020/07/13/duke-nukem-3d-20th-anniversary-world-tour/|
title=Review: Duke Nukem 3D: 20th Anniversary World Tour-Immature Fun With A Price|website=spiderslash|date=2020-06-13|access-date=2023-03-20}}</ref> ''[[Shadow Warrior Classic Redux]]'',<ref>{{cite web|url=https://waltoriouswritesaboutgames.com/2021/03/22/history-lessons-shadow-warrior/|title=History Lessons: Shadow Warrior|website=Waltorious Writes About Games |author=waltorious|date=2021-03-22|access-date=2023-03-20}}</ref> ''[[Duke Nukem (video game)|Duke Nukem]]'' and ''[[Duke Nukem II]]'' for the [[Evercade]],<ref>{{cite web|url=https://lethalguitar.wordpress.com/2023/10/03/duke-nukem-12-remastered/|title=Duke Nukem 1+2 Remastered|first=Nikolai|last=Wuttke-Hohendorf|website=Rigel Engine|date=2023-10-03|access-date=2023-11-12|quote=''If you’ve seen or used RigelEngine before, some of the new features will sound familiar – the project is in fact based on RigelEngine.''}}</ref> and ''[[The Original Strife: Veteran Edition]]''.<ref>{{cite web|first=Hamish|last=Wilson|website=GamingOnLinux|url=https://www.gamingonlinux.com/2017/03/some-thoughts-on-the-original-strife-veteran-edition/|title=Some thoughts on The Original Strife: Veteran Edition|date=2017-03-08|access-date=2023-02-19}}</ref> Source code releases were used however for unauthorized versions of ''[[Lugaru]]'' and ''[[Abuse (video game)|Abuse]]'' that were allowed onto the [[App Store (iOS/iPadOS)|App Store]] prior to takedown claims by the original developers.<ref>{{cite web | url =  http://kotaku.com/5750238/the-case-of-the-identical-rabbit-games | title = The Case Of The Identical Rabbit Games | first = Stephan | last = Tolito | date = 2011-02-02 | access-date = 2011-02-03 | publisher = [[Kotaku]] }}</ref><ref>{{cite web|url=https://indiegameproducer.blogspot.com/2009/08/abuse-abuse.html?lr=1|title= Abuse abuse|website=Indie Game Producer|date=2009-08-14|author-link1=Dave Taylor (game programmer)|first=Dave|last=Taylor|access-date=2023-04-14}}</ref>

Primarily proprietary developers have also helped free gaming by creating free libraries. [[Loki Software]] helped create and maintain the [[Simple DirectMedia Layer]] and [[OpenAL]] libraries and [[Linux Game Publishing]] created and maintained the free network layer [[Grapple (network layer)|Grapple]]. LGP also avoided publishing games similar to popular free titles.<ref>{{cite web|title=Linux Game Publishing: An Interview with Michael Simms|url=http://www.linuxgazette.com/node/10249 |website=[[Linux Gazette]]|date=3 June 2005|access-date=20 July 2022|archive-url=https://web.archive.org/web/20050712080821/http://www.linuxgazette.com/node/10249 |archive-date=12 July 2005|url-status=dead}}</ref> Many libraries/infrastructures have been created without corporate assistance however, such as the [[online game]] system GGZ Gaming Zone,<ref>{{cite web|title=KDE games: meet GGZ gaming zone |url= https://liquidat.wordpress.com/2007/03/05/kde-games-meet-ggz-gaming-zone/ |first=Roland |last=Wolters | website=Liquidat |date=2007-03-05 |access-date=2023-02-05}}</ref><ref>{{cite web|title=GGZ Gaming Zone: Multiplayer gaming framework |url=https://archive.fosdem.org/2008/schedule/events/486.html |first=Josef |last=Spillner | website=[[FOSDEM]] |date=2008-02-24 |access-date=2023-02-11}}</ref> Gamerzilla [[Achievement (video games)|achievement]] integration,<ref>{{cite web|first=Dennis |last=Payne |title=Open source game achievements |url=https://fedoramagazine.org/open-source-game-achievements/ |website=[[Fedora (operating system)|Fedora Magazine]] |date=17 September 2021 |access-date=2023-02-04}}</ref> GamingAnywhere [[Cloud gaming|cloud streaming]],<ref>{{cite web|first=Alex |last=Campbell |title=Open source cloud gaming, play remote games for free |url=
https://www.helpwire.app/blog/open-source-cloud-gaming/ |website=HelpWire |date=6 April 2022 |access-date=2023-02-04}}</ref> [[Mumble (software)|Mumble]] [[voice over IP]],<ref>{{cite web|first= Liam |last=Dawe |title=Open source voice-chat levels up with Mumble 1.4 out now |url=https://www.gamingonlinux.com/2022/01/open-source-voice-chat-levels-up-with-mumble-14-out-now/ |website=GamingOnLinux |date=17 January 2022 |access-date=2023-02-05}}</ref> [[OBS Studio]] for [[screencast]]ing,<ref>{{cite web|first= Liam |last=Dawe |title=Live Streaming On Linux, Now With OBS Studio |url=https://www.gamingonlinux.com/2014/07/live-streaming-on-linux-now-with-obs-studio/ |website=GamingOnLinux |date=2014-07-16 |access-date=2023-02-23}}</ref> and the [[Lutris]] game manager.<ref>{{cite web|first= Seth |last=Kenlon |title=Lutris: Linux game management made easy |url=
https://opensource.com/article/18/10/lutris-open-gaming-platform |website=OpenSource.com |date=25 October 2018 |access-date=2023-02-04}}</ref> [[Physics engine]]s such as [[Box2D]], [[Bullet (software)|Bullet]], [[Chipmunk (software)|Chipmunk]], [[OPAL (software)|OPAL]], [[Open Dynamics Engine]], [[Tokamak (software)|Tokamak]] and [[Newton Game Dynamics]] have been made available as open source. In addition, various [[game creation system]]s are free software<ref>{{cite web|url=https://eis-blog.soe.ucsc.edu/2009/10/landscape-of-open-source-games/|title=Landscape of open source games|first=Jim|last=Whitehead|date=2009-10-29|access-date=2023-09-17|website=Expressive Intelligence Studio Blog|quote=''One was how many open source game-creation systems I found (4, more than the zero I expected). These are Game Editor (2d with export to some mobile devices), Construct (2d, some 3d), Novashell (2d), and Sandbox (3d).''}}</ref> such as the ''[[ZZT]]'' [[Video game remake|remake]] ''[[MegaZeux]]'',<ref>{{cite web|url=https://eev.ee/blog/2016/10/06/succeeding-megazeux/|title=Succeeding MegaZeux|first=Evelyn|last=Wood|website=fuzzy notepad|date=2016-10-06|access-date=2023-02-14}}</ref> [[ZGameEditor]],<ref>{{cite book|url=https://books.google.com/books?id=DeKPDAAAQBAJ|title=Learning and Education Games: Volume Two: Bringing Games into Educational Contexts|first=Karen|last=Schrier Shaenfeld|date=2016-04-10|page=265 |publisher=Lulu.com |isbn=978-1329703568 }}</ref> [[Novashell]],<ref>{{cite web|url=https://www.brighthub.com/computing/linux/articles/51816/?expand_article=1|website=Bright Hub|title=Open Source Game Creation Software: Working in 2D|date=7 October 2009 }}</ref> [[SLUDGE]],<ref>{{cite web|url=https://cheesetalks.net/sludge.php|website=Cheese Talks|first=Josh|last=Bush|title=Cheese talks to himself (about the SLUDGE engine)|date=2015-07-09|access-date=2023-09-17}}</ref> the [[JavaScript]] based [[Ct.js]]<ref>{{cite web|url=https://www.gamingonlinux.com/2019/08/2d-game-editor-ctjs-goes-open-source-and-its-closing-in-on-a-new-major-release/|title=2D game editor ct.js goes open source and it's closing in on a new major release|website=GamingOnLinux|first=Liam|last=Dawe|date=2019-08-21|access-date=2023-09-18}}</ref> and [[Pixelbox.js]],<ref>{{cite web|url=https://gamefromscratch.com/pixelbox-js-game-engine/|title=Pixelbox.js Game Engine|website=GameFromScratch|date=2020-04-14|access-date=2023-09-18}}</ref> versions of [[Game Editor]], [[Adventure Game Studio]], [[OHRRPGCE]], [[Game-Maker]], the engine behind [[Stencyl]], the original [[Construct (game engine)|Construct]], [[GDevelop]] and [[Godot (game engine)|Godot]].

===Rise in popularity and diversity===
[[File:Supertux 0.3.1.PNG|thumb|left|200px|''[[SuperTux]]'']]

Individuals and teams have continued creating many popular free software games, starting really in the late 1990s to the present day. Many of these are clones<ref>{{cite web|first=Terrance|last=Smith|url=https://gamerant.com/free-open-source-alternatives-popular-games/#tanks-of-freedom-ndash-alternative-to-advance-wars|title=8 Free, Open Source Alternatives To Popular Games|date=2023-01-09|access-date=2023-02-06}}</ref> such as ''[[Pingus]]'', ''[[Lix (video game)|Lix]]'',<ref>{{cite web|url=https://connectwww.com/lix-open-source-puzzle-game/64453/|title=Lix Open Source Puzzle Game|author=Manikandan|website=connectWWW.com|date=2022-08-25|access-date=2023-02-06}}</ref> and ''[[Rabbit Escape]]''<ref>{{cite web|website=[[ACCU (organisation)|ACCU]]|first=Andy|last=Balaam|url=https://accu.org/journals/overload/26/143/balaam_2466/|title=Testing: Choose the Right Level|date=2018-02-12|access-date=2023-02-10}}</ref> (''[[Lemmings (video game)|Lemmings]]''), ''[[BomberClone]]'' (''[[Atomic Bomberman]]''),<ref>{{cite web|url=https://www.pcworld.pl/ftp/bomber-clone.html|title=Bomber Clone 0.11.9|website=[[PC World]]|first=Jakub|last=Kuchnio|date=2010-12-13|access-date=2023-03-08}}</ref> ''[[Enigma (2007 video game)|Enigma]]'' (''[[Oxyd]]''), ''[[Beats of Rage]]'' (''[[Streets of Rage]]''), ''[[TetriNET]]''  (''[[Tetris]]''), ''[[GPL Arcade Volleyball|GAV]]'',<ref>{{cite book|url=https://dl.acm.org/doi/abs/10.1145/1016540.1016543|first1=Marcel|last1=Busse|first2=Bernd|last2=Lamparter|first3=Martin|last3=Mauve|first4=Wolfgang|last4=Effelsberg|title=Proceedings of ACM SIGCOMM 2004 workshops on NetGames '04 Network and system support for games - SIGCOMM 2004 Workshops |chapter=Lightweight QoS-support for networked mobile gaming |via=[[ACM Digital Library]]|date=August 2004|page=85 |doi=10.1145/1016540.1016543 |isbn=158113942X |s2cid=1381103 }}</ref> ''[[Blobby Volley]]'', and ''[[SlimeVolley]]''<ref>{{cite web|url=https://blog.desdelinux.net/en/slimevolley-juego-simple-de-volleyball-en-linux/|website=DesdeLinux|title=SlimeVolley: Simple volleyball game on Linux|author=Alexander|date=2023-12-09}}</ref> (''[[Arcade Volleyball]]''), ''[[Ace of Penguins]]'' (''[[Microsoft Solitaire]]''),<ref>{{cite web|url=https://zerker.ca/home/ace-of-penguins.html|title=Ace of Penguins|website=Zerk Zone|first=Ryan|last=Armstrong|date=2020-12-15|access-date=2023-02-12}}</ref> ''[[Crack Attack (video game)|Crack Attack]]'' (''[[Tetris Attack]]''),<ref>{{cite web|url=https://nixbit.com/software/crack-atack-review/|title=  Crack Atack! 1.1.15 review  |website=Nixbit|access-date=2023-02-12}}</ref>  ''[[Pang Zero]]''<ref>{{cite web|url=https://nixbit.com/software/pang-zero-review/ |title= Pang Zero 0.17 review |website=Nixbit|access-date=2023-02-12}}</ref> and ''[[PiX Pang]]''<ref>{{cite web|url=https://nixbit.com/software/pix-pang-review/ |title= PiX Pang 1.6d review |website=Nixbit|access-date=2023-02-12}}</ref> (''[[Super Pang]]''), ''[[System Syzygy]]'' (''[[Systems' Twilight]]''),<ref>{{cite web|url=http://blog.zarfhome.com/2018/11/system-syzygy.html|title=System Syzygy|website=Zarf|first=Andrew|last=Plotkin|date=2018-11-19|access-date=2023-03-07}}</ref> ''[[Troll Bridge (video game)|Troll Bridge]]'', ''[[Fanwor: The Legend of Gemda]]''<ref>{{cite web|url=http://www.identicalsoftware.com/ogs/2000/fanwor.html|title=Fanwor|website=Identical Software|first=Dennis|last=Payne|access-date=2023-12-09}}</ref> and ''[[ZQuest Classic]]''<ref>{{cite web|url=https://www.publish0x.com/nerdpress-od/zelda-classic-and-the-zquest-editor-xgngjy|title=Zelda Classic and the ZQUEST editor|author=WestnileOD|website=NerdPress O.D.|date=2019-11-20|access-date=2023-12-09}}</ref> (''[[The Legend of Zelda (video game)|The Legend of Zelda]]''), ''[[Rocks'n'Diamonds]]'' and ''[[Epiphany (video game)|Epiphany]]''<ref>{{cite web|url=https://www.thinkpenguin.com/gnu-linux/epiphany|title=Epiphany|website=Think Penguin|access-date=2023-12-09}}</ref> (''[[Boulder Dash (video game)|Boulder Dash]]''), ''[[Numpty Physics]]'' (''[[Crayon Physics]]''),<ref>{{cite web|url=https://rtaibah.com/2009/06/27/numpty-physics-an-addictive-crayola-istic-puzzle-game/|title=Numpty Physics: An Addictive Crayola-istic Puzzle Game!|website=rtaibah|first=Rami|last=Taibah|date=2009-06-27|access-date=2023-03-07}}</ref> ''[[Pathological (video game)|Pathological]]'' (''[[Logical (video game)|Logical]]''),<ref>{{cite web|url=https://nixbit.com/software/pathological-review/|title=Pathological 1.1.3 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[PainTown]]'' (''[[Mugen (game engine)|MUGEN]]''),<ref>{{cite web|url=https://www.pcworld.pl/ftp/gry_10764/PainTown-3-3-1.html|title=PainTown 3.3.1|website=[[PC World]]|first=Jakub|last=Kuchnio|date=2010-10-26|access-date=2023-03-14}}</ref> ''[[FloboPoyo]]'',<ref>{{cite web|url=https://nixbit.com/software/flobopuyo-review/|title=FloboPuyo 0.20 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[GTK Puyo Puyo]]''<ref>{{cite web|url=https://www.linuxjournal.com/article/3752|website=[[Linux Journal]]|title=Focus on Software|first=David A.|last=Bandel|date=2000-01-01|access-date=2023-12-18}}</ref> (''[[Puyo Puyo]]''), ''[[Paranoid (video game)|Paranoid]]'',<ref>{{cite web|url=https://nixbit.com/software/paranoid-review/|title= Paranoid 0.99.9 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[LBreakOut 2]]'',<ref>{{cite web|url=https://www.opensourceforu.com/2009/09/linux-game-review-lbreakout-2/|website=Open Source For You|title=Linux Game Review: LBreakOut 2|first=Shayon|last=Pal|date=2009-09-01|access-date=2023-03-08}}</ref> and ''[[Briquolo]]''<ref>{{cite web|url=https://www.deepin.org/en/recommended-software-from-deepin-software-center-010914/|title=Recommended software from Deepin Software Center|website=Deepin Technology Community|date=2014-01-09|access-date=2023-03-08}}</ref> (''[[Breakout (video game)|Breakout]]''), ''[[BurgerSpace]]'' (''[[BurgerTime]]''),<ref>{{cite web|url=https://debaday.debian.net/2007/08/29/burgerspace-a-free-clone-of-the-classic-arcade-game-burgertime/index.html|first=Alexey|last=Beshenov|title=burgerspace: a free clone of the classic arcade game Burgertime |website=Debian Package of the Day|date=2007-08-29|access-date=2023-02-23}}</ref> ''[[Einstein Puzzle]]'' (''[[Sherlock (puzzle video game)|Sherlock]]''),<ref>{{cite web|url=https://nixbit.com/software/xye-review/ |title=Xye 0.7.6 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[UltraStar]]'' (''[[SingStar]]''), ''[[OpenClonk]]'' (''[[Clonk]]''), ''[[FreeGish]]'' (''[[Gish (video game)|Gish]]''),<ref>{{cite web|first=Joris|last=van de Donk|title=FreeGish|url=http://mooses.nl/pages/freegish.html|date=2012|access-date=2023-02-12|website=Mooses.nl}}</ref> ''[[Hexoshi]]'' (''[[Super Metroid]]''),<ref name="Gleason">{{cite web|first=Alex |last=Gleason | title=Libre Game Spotlight, idea for a video series about libre games | date= 2018-09-26| url=https://blog.alexgleason.me/libre-game-spotlight/ | access-date=2023-02-12 | quote=''Hexoshi – this game’s resemblance to Metroid makes it relatable to gamers. The game’s tight controls and solid gameplay may be a good stepping stone for people.''}}</ref> ''[[I Have No Tomatoes]]''<ref>{{cite web|url=https://connectwww.com/fun-tomato-smashing-game-i-have-no-tomatoes/64565/|title=Fun Tomato Smashing Game – I Have No Tomatoes|author=Manikandan|website=connectWWW.com|date=2022-09-13|access-date=2023-02-08}}</ref> and ''[[Bombic]]''<ref>{{cite web|url=https://nixbit.com/software/bombic-review/ |title=  Bombic 0.0.1 review  |website=Nixbit|access-date=2023-04-23}}</ref> (''[[Dynablaster]]''), ''[[Scorched 3D]]'' and ''[[XScorch]]''<ref>{{cite web|url=https://nixbit.com/software/xscorch-review/|title= xscorch 0.2.0 review  |website=Nixbit|access-date=2023-02-12}}</ref> (''[[Scorched Earth (video game)|Scorched Earth]]''), ''[[FreeVikings]]'' (''[[The Lost Vikings]]''),<ref>{{cite web|url=https://nixbit.com/software/freevikings-review/|title=FreeVikings 0.5 review|website=Nixbit|access-date=2023-02-08}}</ref> ''[[Savage Wheels]]'' (''[[Destruction Derby]]''),<ref>{{cite web|first=Georgi Dimitrov|last=Georgiev|url=https://www.pc-freak.net/blog/linux-release-of-the-game-savage-wheels-destruction-derby-like-game-is-out/|title=Linux release of the game Savage Wheels (Destruction Derby like game) is out!|website=PC Freak|date=2010-11-17|access-date=2023-03-10}}</ref> ''[[Penguin Command]]'' (''[[Missile Command]]''),<ref>{{cite web|url=https://nixbit.com/software/penguin-command-review/|title= Penguin Command 1.6.10 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Sable (free video game)|Sable]]'' (''[[Space Harrier]]''),<ref>{{cite web|url=https://nixbit.com/software/sable-review/|title=Sable 1.0 review  |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Circus Linux!]]'' (''[[Circus (video game)|Circus Atari]]''),<ref>{{cite web|url=https://nixbit.com/software/circus-linux-review/|title= Circus Linux! 1.0.3 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Falling Time]]'' (''[[Fall Down (video game)|Fall Down]]''),<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Falling_Time-15721.html|title=Falling Time|website=The Linux Game Book|access-date=2023-03-08}}</ref> ''[[Toppler (video game)|Toppler]]'' (''[[Tower Toppler]]''),<ref name="Intelligent">{{cite web|title=Top 10 OSS Games You've Never Played|url=http://akaimbatman.intelligentblogger.com/wordpress/archives/27|archive-url=https://web.archive.org/web/20080629232246/http://akaimbatman.intelligentblogger.com/wordpress/archives/27|date=2006-04-06|archive-date=2008-06-29|website=Intelligent Blogger}}</ref><ref>{{cite web|url=https://www.linuxjournal.com/article/6495|website=[[Linux Journal]]|title=Upfront|first=David A.|last=Bandel|date=2003-03-01|access-date=2023-12-18}}</ref> ''[[Gem Drop X]]'' (''[[Gem Drop]]''),<ref>{{cite web|url=https://nixbit.com/software/gem-drop-x-review/|title=Gem Drop X 0.9 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Fish Supper]]''<ref>{{cite web|url=https://nixbit.com/software/fish-supper-review/|title= Fish Supper 0.1.4 review |website=Nixbit|access-date=2023-02-12}}</ref> and ''[[Froggix]]''<ref>{{cite web|url=https://github.com/scifly1/froggix|title=Froggix|website=Open Source Game List|access-date=2023-02-12}}</ref> (''[[Frogger]]''), ''[[OpenMortal]]'' (''[[Mortal Kombat]]''),<ref>{{cite web|url=https://openmortal.informer.com|title=OpenMortal 0.7|website=GameInformer|access-date=2023-02-08}}</ref><ref>{{cite web|url=https://nixbit.com/software/openmortal-review/|title=OpenMortal 0.7.1 review|website=Nixbit|access-date=2023-02-08}}</ref> ''[[Triplane Turmoil]]'' and ''[[SDL Sopwth]]''<ref>{{cite magazine|url=https://linuxformat.com/archives?issue=135|title=HotPicks|first=Nick|last=Veitch|magazine=[[Linux Format]]|issue=135|date=September 2010|page=71}}</ref> (''[[Sopwith (video game)|Sopwith]]''), ''[[List of Touhou Project fangames|Taisei Project]]'' (''[[Touhou Project]]''),<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/05/taisei-a-free-and-open-source-fan-game-based-on-touhou-project-has-a-new-update-out/|title=Taisei, a free and open source fan game based on Touhou Project has a new update out|date=2021-05-03|access-date=2023-03-15}}</ref> ''[[Crown and Cutlass]]'' (''[[Sid Meier's Pirates!]]''),<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/C.html#crown_and_cutlass|title=Crown and Cutlass|website=Open Source Game List|access-date=2023-02-12}}</ref> ''[[IceBreaker (video game)|IceBreaker]]'' (''[[JezzBall]]''),<ref>{{cite web|first=Lee|last=Anderson|url=https://www.cnn.com/2000/TECH/computing/12/20/linux.games.idg/index.html|title=Top 10 Linux games for the holidays|date=2000-12-20|website=[[CNN]]|access-date=2023-02-06}}</ref> ''[[Monsterz (video game)|Monsterz]]'' (''[[Bejeweled (video game)|Bejeweled]]''),<ref>{{cite web|url=https://nixbit.com/software/monsterz-review/|title=Monsterz 0.7.0 review  |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Tux Football]]''<ref>{{cite web|url=https://nixbit.com/software/tux-football-review/|title=Tux Football 0.1 review |website=Nixbit|access-date=2023-02-06}}</ref> and ''[[YSoccer]]''<ref>{{cite web|url=https://nixbit.com/software/yoda-soccer-review/|title=Yoda Soccer 0.73 review |website=Nixbit|access-date=2023-02-11}}</ref> (''[[Sensible Soccer]]''), ''[[iMaze]]'' (''[[MIDI Maze]]''),<ref>{{cite web |last=Wilson |first=Hamish | date=2023-01-23 | title=Building a Retro Linux Gaming Computer - Part 26: Coming to You Live | url=https://www.gamingonlinux.com/2023/02/building-a-retro-linux-gaming-computer-part-26-coming-to-you-live/ | website=GamingOnLinux | access-date=2023-02-20}}</ref> ''[[PixBros]]'' (''[[Bubble Bobble]]''),<ref>{{cite web|first=Georgi Dimitrov|last=Georgiev|url=https://www.pc-freak.net/blog/pixbros-a-nice-arcade-game-remake-of-bubble-bobble-for-gnulinux/|title=PixBros a nice Arcade Game remake of Bubble Bobble for GNU/Linux|website=PC Freak|date=2011-09-26|access-date=2023-03-10}}</ref> ''[[Surge the Rabbit]]'' (''[[Sonic the Hedgehog]]''),<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2020/01/move-over-sonic-surge-has-arrived-with-open-surge-a-game-engine-and-retro-platformer/|title=Move over Sonic, Surge has arrived with Open Surge - a game engine and retro platformer|date=2020-01-17|access-date=2023-02-06}}</ref> ''[[Dave Gnukem]]'' (''[[Duke Nukem (video game)|Duke Nukem]]''),<ref>{{cite magazine|last=Zymaris|first=Con|date=July 2001|title=The Open Source Lucky Dip|url=https://books.google.com/books?id=niCRTTknircC&dq=Dave+Gnukem&pg=PA52|magazine=AUUGN|location=[[Australia]]|publisher=[[AUUG]]|access-date=2023-02-06|quote=''Written by David Jaffe, Dave Gnukem is a 2D scrolling platform game, similar to Duke Nukem 1. It includes a sprite and level editor. It uses GGI and thus runs on the console as well as X, windowed or fullscreeen. It also runs on Windows, using DirectX. Download it and blow yourself away''}}</ref> ''[[Formido (game)|Formido]]''<ref>{{cite web|url=https://downloads.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Formido-11066.html|title=Formido|website=The Linux Game Book|access-date=2023-12-09}}</ref> (''[[Phobia (video game)|Phobia]]''), ''[[Violetland]]''<ref>{{cite web|url=https://www.linuxlinks.com/violetland/|title=Violetland|website=LinuxLinks|access-date=2012-12-09}}</ref> and ''[[Grimsonland]]''<ref>{{cite web|url=https://lutris.net/games/grimsonland/|title=Grimsonland|website=[[Lutris]]|access-date=2023-12-09}}</ref> (''[[Crimsonland]]''), ''[[Luanti]]'' (''[[Minecraft]]''),<ref>{{Cite web |date=2021-02-01 |title=Minetest 5.4.0 to make downloading mods and games a lot easier |url=https://www.gamingonlinux.com/2021/02/minetest-5-4-to-make-downloading-mods-and-games-a-lot-easier/ |url-status=live |archive-url=https://archive.today/20230802021430/https://www.gamingonlinux.com/2021/02/minetest-5-4-to-make-downloading-mods-and-games-a-lot-easier/ |archive-date=2023-08-02 |access-date=2023-08-02 |website=GamingOnLinux |language=en}}</ref> ''[[SolarWolf]]'' (''[[Solar Fox]]''),<ref>{{cite web|url=https://www.linuxlinks.com/solarwolf/|title=SolarWolf|website=LinuxLinks|access-date=2023-03-08}}</ref> ''[[Freedroid]]''<ref>{{cite book |last=Negus |first=Christopher |date=2009-04-22 |title=Fedora 9 and Red Hat Enterprise Linux Bible |url=https://books.google.com/books?id=wpbLuqjYwVUC |location=United States  |publisher=John Wiley & Sons |page=293  |isbn=9780470407080 |quote=Clone of the C64 game Paradroid. }}</ref> and ''[[Nighthawk (video game)|Nighthawk]]''<ref>{{cite book |last=Nguyen |first=Binh |title=Linux Dictionary |url=https://books.google.com/books?id=vdZWBQAAQBAJ |page=1095 |quote=An improved version of Paradroid - a strategic shoot-em up. You are a droid out to save the universe. To do this, you must do more than simply blasting everything in sight - you have to transfer to better droids in order to conquer more advanced droids, and go through walls to reach parts other droids cannot reach. }}</ref> (''[[Paradroid]]''), ''[[Tile World]]'' and ''[[Escape (open source video game)|Escape]]''<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Escape-10952.html|title=Escape|website=The Linux Game Book|access-date=2023-12-09}}</ref> (''[[Chip's Challenge]]''),<ref>{{cite web|url=https://nixbit.com/software/tile-world-review/|title=Tile World 1.2.2 review|website=Nixbit|access-date=2023-02-06}}</ref>  ''[[FreeOrion]]'' (''[[Master of Orion]]''),<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2020/01/move-over-sonic-surge-has-arrived-with-open-surge-a-game-engine-and-retro-platformer/|title=FreeOrion, the open source game inspired by Master of Orion has a massive new release today|website=GamingOnLinux|date=2017-05-17|access-date=2023-02-06}}</ref> ''[[Tuxánci]]'' (''[[Bulánci]]''), ''[[Super Tux Party]]'' (''[[Mario Party]]''),<ref>{{cite web|website=GamingOnLinux|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2021/04/the-sunday-section-keeping-up-with-some-missed-linux-and-gaming-bits/|title=The Sunday Section - keeping up with some missed Linux and gaming bits|date=2017-05-17|access-date=2023-02-06}}</ref> ''[[Neverball]]'' (''[[Super Monkey Ball]]''),<ref>{{cite web|title=Games|url=http://www.theopendisc.com/programs/games/|website=OpenDisc|access-date=2009-03-30|archive-url=https://web.archive.org/web/20090227045352/http://www.theopendisc.com/programs/games/|archive-date=2009-02-27|url-status=dead}}</ref> ''[[Raptor: Call of the Shadows#Legacy|Kraptor/RafKill]]'' (''[[Raptor: Call of the Shadows]]''), ''[[Trackballs (video game)|Trackballs]]'' (''[[Marble Madness]]''),<ref>{{cite web|website=[[LWN.net]]|author=josh|url=https://lwn.net/Articles/408963/|title=The state of Linux gaming|date=2010-10-07|access-date=2023-02-07}}</ref> ''[[Hurrican]]'' (''[[Turrican]]''),<ref>{{cite web|url=https://connectwww.com/hurrican-free-jump-and-shoot-game/63861/|title=Hurrican Free Jump and Shoot Game|author=Manikandan|website=connectWWW.com|date=2022-04-09|access-date=2023-02-12}}</ref> ''[[OpenTyrian]]'' (''[[Tyrian (video game)|Tyrian]]''),<ref>{{cite web|url=https://connectwww.com/opentyrian-shooter-game-how-to-install-opentyrian-on-ubuntu/61118/|title=OpenTyrian Shooter Game – How to install OpenTyrian on Ubuntu|author=Manikandan|website=connectWWW.com|date=2019-10-18|access-date=2023-02-12}}</ref> ''[[HexGL]]'' (''[[Wipeout (video game series)|Wipeout]]''),<ref>{{cite web|url=https://www.theverge.com/2012/9/1/3285326/play-this-hexgl-wipeout-clone-html5|title=Play this: 'HexGL' is an unabashed 'Wipeout' clone built with HTML5, JavaScript, and WebGL|first=Chris|last=Welch|website=[[The Verge]]|date=2012-09-12|access-date=2023-02-12}}</ref> ''[[Zaz (video game)|Zaz]]'' (''[[Zuma (video game)|Zuma]]''), ''[[Ostrich Riders]]'' (''[[Joust (video game)|Joust]]''),<ref>{{cite web|first=Tim|last=Schuermann|website=[[Linux Magazine]]|url=https://www.linux-magazine.com/Online/News/Gifts-for-Gamers-Some-End-of-Year-Recommendations-Part-4|title=Gifts for Gamers: Some End-of-Year Recommendations, Part 4|date=2015-10-24|access-date=2009-12-31}}</ref> ''[[Endless Sky (video game)|Endless Sky]]''<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2015/10/endless-sky-an-open-source-open-world-space-sim-inspired-by-escape-velocity/|title=Endless Sky, An Open Source & Open World Space Sim Inspired By Escape Velocity|website=GamingOnLinux|date=2015-10-24|access-date=2023-02-06}}</ref> and ''[[Naev]]''<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2020/12/free-and-open-source-space-sim-naev-has-a-big-overhaul-update-out-now/|title=Free and open source space sim 'Naev' has a big overhaul update out now|website=GamingOnLinux|date=2020-12-17|access-date=2023-02-06}}</ref> (''[[Escape Velocity (video game)|Escape Velocity]]''), ''[[Pioneer (video game)|Pioneer]]'' and ''[[Oolite (video game)|Oolite]]'' (''[[Elite (video game series)|Elite]]''), ''[[SuperTux]]'', ''[[Secret Maryo Chronicles]]'' and ''[[Mari0]]'' (''[[Super Mario Bros.]]''),<ref>{{cite web|url=http://voices.yahoo.com/free-platformers-open-source-gamers-guide-free-739405.html?cat=19|archive-url=https://web.archive.org/web/20140726173706/http://voices.yahoo.com/free-platformers-open-source-gamers-guide-free-739405.html?cat=19|archive-date=2014-07-26|title=Free Platformers: Open Source Gamers Guide to Free Games Part 3|author=MrCopilot|website=Yahoo Voices|date=2007-12-31|access-date=2023-04-02}}</ref> ''[[SuperTux 3D]]''<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_R-S_files/SuperTux_3D-13047.html|title=SuperTux 3D|website=The Linux Game Book|access-date=2023-12-09}}</ref> (''[[Super Mario 64]]''), ''[[WarMUX]]''<ref>{{cite web|author=Rustybolts|url=https://www.gamingonlinux.com/2011/02/warmux-1101/|website=GamingOnLinux|title=Warmux 11.01|date=2011-02-01|access-date=2023-02-07}}</ref> and ''[[Hedgewars]]''<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2022/12/the-free-and-open-source-worms-like-hedgewars-is-now-on-steam/|title=The free and open source Worms-like 'Hedgewars' is now on Steam|website=GamingOnLinux|date=2022-12-19|access-date=2023-02-07}}</ref> (''[[Worms (1995 video game)|Worms]]''), ''[[OpenLieroX]]'', ''[[NiL]]'',<ref>{{cite web|url=https://www.cnn.com/2000/TECH/computing/04/12/linux.net.games.idg/index.html|title=Open-source, networkable shooter has Linux gamers buzzing|website=[[CNN]]|first=Lee|last=Anderson|date=2000-04-12|access-date=2023-03-06}}</ref> ''[[LieroLibre]]'' (''[[Liero]]'') as well as ''[[Frets on Fire]]'' (''[[Guitar Hero]]''), and ''[[StepMania]]'' (''[[Dance Dance Revolution]]'').
[[File:Kikinanobot.png|thumb|right|[[kiki the nanobot]]]]

''[[Frozen Bubble]]'', originally a clone of ''[[Puzzle Bobble]]'', has become a classic known for its addictive gameplay and winner of many ''[[Linux Journal]]'' Reader's Choice Awards.<ref>{{cite web |last=Wilson |first=Hamish | date=2023-02-06 | title=Building a Retro Linux Gaming Computer - Part 24: Mother Knows Best | url=https://www.gamingonlinux.com/2023/02/building-a-retro-linux-gaming-computer-part-24-mother-knows-best/ | website=GamingOnLinux | access-date=2023-02-06}}</ref>  These games and others have also helped expand the prevalent [[Tux (mascot)#Video games|Tux genre]] which started with titles and like ''A Quest for Herring'' and are related to the activist content of games like ''XBill''. As well as ground up clones,<ref>{{cite web |last=Love |first=Dylan |date=3 October 2021| title=11 Classic Games You Can Now Play For Free |url=https://www.businessinsider.com/open-source-games-2011-10 |website=[[Business Insider]]|access-date=2023-02-04}}</ref> open source [[Game engine recreation|re-implementations]] of various proprietary games have become [[List of game engine recreations|increasingly common]], which utilize the original game data.<ref name="Bolding">{{cite web |last=Bolding|first=Jonathan |date=4 September 2022|title=Y'all know about these huge lists of free, open-source game clones, right? |url=https://www.pcgamer.com/yall-know-about-these-huge-lists-of-free-open-source-game-clones-right/ |website=[[PC Gamer]]|access-date=2023-02-04}}</ref>

More original games such as the platformers ''[[0verkill]]'',<ref>{{cite web|url=https://www.linuxjournal.com/article/9901|title=Cooking with Linux - Exciting Arcade Action in Glorious ASCII |first=Marcel|last=Gagné|website=[[Linux Journal]]|date=2007-12-01|access-date=2023-03-01}}</ref> ''[[Abe's Amazing Adventure]]'',<ref>{{cite web|first=Georgi Dimitrov|last=Georgiev|url=https://www.pc-freak.net/blog/abes-amazing-adventure-a-dangerous-dave-2-like-gnu-linux-freebsd-arcade-game-substitute/|title=Abe's Amazing Adventure, A Dangerous Dave 2 like GNU Linux / FreeBSD Arcade Game substitute|website=PC Freak|date=2011-12-14|access-date=2023-02-08}}</ref> ''[[Adventures on Planet Zephulor]]'',<ref>{{cite web|url=http://happypenguin.org/show?adventures+on+planet+zephulor|title=Adventures on Planet Zephulor|website=[[The Linux Game Tome]]|author=mrhollow|date=2004-08-13|archive-url=https://web.archive.org/web/20051214211659/http://happypenguin.org/show?adventures+on+planet+zephulor |access-date=2023-02-12|url-status=usurped|archive-date=2005-12-14 }}</ref> ''[[Alex the Allegator 4]]'',<ref>{{cite web|website=Reloaded.org|author=OvErLoRd|url=http://www.reloaded.org/download/Alex-Allegator-4/38/|title=Alex the Allegator 4 |access-date=2023-02-10}}</ref> ''[[Amphetamine (video game)|Amphetamine]]'',<ref>{{cite web|url=https://nixbit.com/software/amphetamine-review/|title=Amphetamine 0.8.10 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[B.A.L.L.Z.]]'',<ref>{{cite web|url=https://connectwww.com/cows-revenge-pixel-art-platform-game/63950/|title=B.A.L.L.Z. Platform Game|author=Manikandan|website=connectWWW.com|date=2022-12-03|access-date=2023-02-12}}</ref> ''[[Cow's Revenge]]'',<ref>{{cite web|url=https://connectwww.com/cows-revenge-pixel-art-platform-game/63950/|title=Cow's Revenge Pixel Art Platform Game|author=Manikandan|website=connectWWW.com|date=2022-05-26|access-date=2023-02-12}}</ref> ''[[Gilbert and the doors]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Gilbert_and_the_doors-15421.html|title=Gilbert and the doors|website=The Linux Game Book|access-date=2023-03-07}}</ref> ''[[Go Ollie!]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Gilbert_and_the_doors-15421.html|title=Go Ollie!|website=The Linux Game Book|access-date=2023-03-07}}</ref> ''[[GunFu Deadlands]]'',<ref>{{cite web|url=https://www.tigsource.com/2010/02/05/gunfu-deadlands/|title=GunFu Deadlands|first=Derek|last=Yu|date=2010-02-05|website=TIGSource|access-date=2023-12-09}}</ref> ''[[JVGS]]'',<ref>{{cite web|url=https://www.linuxlinks.com/jvgs/|title=JVGS – minimalistic platform game|date=2017-12-15|first=Steve|last=Emms|website=LinuxLinks|access-date=2023-12-09}}</ref> ''[[Me and My Shadow (video game)|Me and My Shadow]]'',<ref>{{cite web|website=GamingOnLinux|first=Lii|last=Edward|url=https://www.gamingonlinux.com/2012/03/meandmyshadow-puzzle-platformer-v03-released/|title=MeAndMyShadow puzzle platformer V0.3 Released|date=2012-03-17|access-date=2023-02-07}}</ref> ''[[Mr. Rescue]]'',<ref>{{cite web|url=https://www.indieretronews.com/2013/05/mr-rescue-throw-people-out-of-window-in.html|title=Mr. Rescue - Throw people out of a window of a burning building, all via this 2D Platformer|date=2013-05-13|website=Indie Retro News|access-date=2023-03-07}}</ref>  ''[[Nikwi]]'',<ref>{{cite web|url=https://nixbit.com/software/nikwi-deluxe-review/|title= Nikwi Deluxe 1.0 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Plee the Bear]]'',<ref>{{cite web|url=https://linuxfr.org/news/nouvelle-version-du-jeu-plee-the-bear|title=Nouvelle version du jeu Plee the Bear|first=Julien|last=Jorge|website=LinuxFr.org|date=2010-11-10|access-date=2023-03-07}}</ref> ''[[Super Bombinhas]]'',<ref>{{cite web|url=https://freakspot.net/en/video-game-Super-Bombinhas/|title=Video game Super Bombinhas|website=Freak Spot|date=2021-12-03|access-date=2023-03-07}}</ref> ''[[Stringrolled]]'',<ref>{{cite web|website=Stephen's Blog|url=http://blog.sp.or.at/posts/200904python-everywhere-computer-games.html|title=Python everywhere: computer games|date=2009-04-02|access-date=2023-02-07}}</ref> ''[[Teeworlds]]'', ''[[Which Way Is Up (video game)|Which Way Is Up]]'',<ref>{{cite web|website=MakeUseOf|first=Justom|last=Pot|url=https://www.makeuseof.com/tag/5-casual-linux-games/|title=5 Casual Linux Games You Probably Don't Know About|date=2010-11-03|access-date=2023-02-07}}</ref>  and ''[[Worminator 3]]'',<ref>{{cite book |last=Negus |first=Christopher |author-link=  |date=2009-04-29 |title=Fedora 10 and Red Hat Enterprise Linux Bible |url=https://books.google.com/books?id=VHIteZ-uvlQC |location=United States  |publisher=John Wiley & Sons |page=287  |isbn=9780470485460 }}</ref><ref>{{cite web|url=https://www.gamedeveloper.com/business/making-it-work-as-a-solo-game-developer|website=[[Game Developer (website)|Game Developer]]|title=Making it Work as a Solo Game Developer|first=Jeffrey|last=Nielson|date=2017-05-05|access-date=2024-03-10}}</ref> puzzle games such as ''[[Anagramarama]]'',<ref>{{cite web|url=https://pressanykey.simplyahobby.com/2006/10/01/anagramarama/|title=Anagramarama|website=Press Any Key|date=2006-10-01|access-date=2023-03-07}}</ref> ''[[Angry, Drunken, Dwarves]]'',<ref>{{cite web|url=https://www.linuxjournal.com/article/8978|title=Cooking with Linux - A Gem of an Idea|first=Marcel|last=Gagné|website=[[Linux Journal]]|date=2006-07-01|access-date=2023-03-01}}</ref> ''[[Balls Blocks and Mazes]]'',<ref>{{cite web|url=https://nixbit.com/software/bbm-review/|title=BBM 0.3.1 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Battery (video game)|Battery]]'',<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/B.html#battery|title=Battery|website=Open Source Game List|access-date=2023-03-07}}</ref> ''[[Brikx]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_0-C_files/Brikx-7099.html|title=Brikx|website=The Linux Game Book|date=2009-09-03|access-date=2023-03-07}}</ref> ''[[Chroma (free video game)|Chroma]]'',<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/C.html#chroma|title=Chroma|website=Open Source Game List|access-date=2023-03-07}}</ref> ''[[Dynamite (video game)|Dynamite]]'',<ref>{{cite web|url=https://nixbit.com/software/dynamite-review/|title=Dynamite 1.1 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[Hex-a-Hop]]'',<ref>{{cite web|url=https://www.gamingonlinux.com/2011/05/hexahopheard-of-it/|title=Hex-a-Hop...heard of it?|website=GamingOnLinux|first=Liam|last=Dawe|date=2011-05-27|access-date=2023-03-08}}</ref> ''[[irrlamb]]'',<ref>{{cite web|url=https://www.edivaldobrito.com.br/como-instalar-o-jogo-irrlamb-no-linux-via-flatpak/|title=Como instalar o jogo irrlamb no Linux via Flatpak|website=Blog de Edivaldo|first=Edivaldo|last=Brito|date=2023-02-25|access-date=2023-03-07}}</ref> ''[[kiki the nano bot]]'', ''[[Krystal Drop]]'',<ref>{{cite web|url=https://www.linuxjournal.com/article/7122|website=[[Linux Journal]]|title=UpFront|date=2003-12-01|access-date=2023-12-18|first=David|last=Bandel}}</ref> ''[[Marble Muncher]]'',<ref>{{cite web|url=https://www.rockpapershotgun.com/marble-marcher-is-what-happens-when-monkey-ball-meets-math|title=Marble Marcher is what happens when Monkey Ball meets math|website=[[Rock Paper Shotgun]]|first=Dominic|last=Tarason|date=2019-01-10|access-date=2019-01-10}}</ref> ''[[Memonix]]'',<ref>{{cite web|url=https://www.download3k.com/Games/Puzzles-Logic/Download-Memonix.html|title=Memonix 1.6 Review|first=Michael|last=Black|website=Download3k|date=2013-11-18|access-date=2023-03-07}}</ref> ''[[Minilens]]'',<ref>{{cite web|url=https://www.linuxlinks.com/minilens-puzzle-platform-game-post-apocalyptic-earth/|website=LinuxLinks|title=Minilens – puzzle-platform game set on post-apocalyptic Earth|date=2023-10-28|first=Steve|last=Emms|access-date=2023-12-09}}</ref> ''[[Raincat]]'',<ref>{{cite web|url=https://medium.com/@marc.vandehey/raincat-lesson-1-79a750ef319f|website=[[Medium (website)|Medium]]|title=RainCat: Lesson 1|first=Marc|last=J Vandehey|date=2016-09-07|access-date=2023-03-07}}</ref> ''[[Tetzle]]'',<ref>{{cite web|url=https://www.godmindedgaming.com/reviewmgr.php?key=tetzle|title=Review: Tetzle|website=God Minded Gaming|date=2018-02-28|access-date=2023-02-06}}</ref> ''[[The Powder Toy]]'', ''[[Wizznic!]]'',<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/W.html#wizznic|title=Wizznic!|website=Open Source Game List|access-date=2023-03-08}}</ref> and ''[[Xye]]'',<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/X.html#xye|title=Xye|website=Open Source Game List|access-date=2023-03-08}}</ref>  arcade games such as ''[[Apricots (video game)|Apricots]]'',<ref>{{cite web|url=https://blog.desdelinux.net/en/apricots-otro-de-mis-entretenidos-juegos-2d/|title=Apricots, another of my entertaining 2D games|website=From Linux|first=Alexander|last=Gaara|date=2014-12-15|access-date=2023-03-08}}</ref> ''[[Airstrike (free video game)|Airstrike]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_0-C_files/Airstrike-6897.html|title=Airstrike|website=The Linux Game Book|access-date=2023-03-08}}</ref> ''[[Avoision (video game)|Avoision]]'',<ref>{{cite web|url=http://www.freebsdsoftware.org/games/avoision.html|title=Avoision|website=FreeBSD Software|date=2018-05-26|access-date=2023-02-13}}</ref> ''[[Battle Tanks (free video game)|Battle Tanks]]'',<ref>{{cite web|last=Popov |first=Dimitri |date=2007-08-17|title=Battle Tanks is a blast |url=https://www.linux.com/news/battle-tanks-blast/ |website=[[Linux.com]] |access-date=2023-02-05}}</ref> ''[[Barrage (free video game)|Barrage]]'',<ref>{{cite web|url=https://nixbit.com/software/barrage-review/|title=Barrage 1.0.2 review  |website=Nixbit|access-date=2023-04-21}}</ref> ''[[C-Dogs]]'', ''[[Chromium B.S.U.]]'', ''[[Emilia Pinball]]'',<ref>{{cite web|url=https://mdco2.mini.debconf.org/talks/23-my-diy-pinball-on-debian/|title=My DiY Pinball on Debian|website=MiniDebConf|first=Philippe|last=Coval|date=2020-11-22|access-date=2023-03-08}}</ref> the ''[[Enemy Lines (video game series)|Enemy Lines]]'' series,<ref>{{cite web|url=https://nixbit.com/software/enemy-lines-6-review/|title=enemy lines 6 1.1 review |website=Nixbit|access-date=2023-02-12}}</ref><ref>{{cite web|url=https://nixbit.com/software/enemy-lines-7-review/|title=Enemy Lines 7 0.6 review  |website=Nixbit|access-date=2023-03-15}}</ref> ''[[FLAW]]'',<ref>{{cite web|url=https://www.linuxlinks.com/flaw/|title=F.L.A.W – top-down wizard battle game|date=2023-10-29|access-date=2023-12-10|first=Steve|last=Emms|website=LinuxLinuks}}</ref> ''[[Free Tennis]]'',<ref>{{cite web|url=https://nixbit.com/software/free-tennis-review/|title=Free Tennis 0.4.8 review  |website=Nixbit|access-date=2023-02-12}}</ref> the ''[[Geki (video game series)|Geki]]'' series,<ref>{{cite web|first=Georgi Dimitrov|last=Georgiev|url=https://www.pc-freak.net/blog/geki2-and-geki3-a-xenon-2-megablast-like-games-for-gnu-linux-and-freebsd/|title=Geki2 and Geki3 a Xenon 2 Megablast like games for GNU / Linux and FreeBSD|website=PC Freak|date=2011-12-22|access-date=2023-02-08}}</ref> ''[[Hase (video game)|Hase]]'',<ref>{{cite web|url=https://git.holarse-linuxgaming.de/wiki/hase|title=Hase|website=Holarse|access-date=2023-03-07}}</ref> ''[[Help Hannah's Horse]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Help_Hannah_s_Horse-11375.html|title=Help Hannah's Horse|website=The Linux Game Book|access-date=2023-03-08}}</ref> ''Heroes'',<ref>{{cite book |last=Negus |first=Christopher |author-link= |date=2006-11-24 |title=Live Linux CDs: Building and Customizing Bootables |url=https://books.google.com/books?id=2S3eUgb39C8C |location=United States |publisher=Prentice Hall Professional |page=311 |isbn=9780132432740 }}</ref> ''[[Jammer the Gardener]]'',<ref>{{cite web|url=https://www.linuxlinks.com/jammerthegardener/|title= Jammer The Gardener – cartoon game|date=2022-11-13|access-date=2023-12-09|website=LinuxLinks}}</ref> ''[[Kill Everything That Moves|KETM]]'',<ref>{{cite web|first=Georgi Dimitrov|last=Georgiev|url=https://www.pc-freak.net/blog/kill-everything-that-moves-ketm-an-arcade-spaceship-tyrian-gnu-linux-game/|title=Kill everything that Moves (KETM) an arcade spaceship Tyrian GNU / Linux game|website=PC Freak|date=2012-01-17|access-date=2023-03-10}}</ref> ''[[Kuklomenos]]'',<ref>{{cite web|url=https://www.linuxjournal.com/content/kuklomenos-weird-space-shooter|title=Kuklomenos—Weird Space Shooter?|first=John|last=Knight|date=2008-11-11|website=[[Linux Journal]]|access-date=2023-03-08}}</ref> ''[[Librerama]]'',<ref>{{cite web|url=https://trilarion.github.io/opensourcegames/games/L.html#librerama|title=Librerama|website=Open Source Game List|access-date=2023-03-08}}</ref> ''[[Luola]]'',<ref>{{cite web|url=http://happypenguin.org/show?Luola|title=Luola|website=[[The Linux Game Tome]]|author=nilfilter|date=2003-10-15|archive-url=https://web.archive.org/web/20050514073849/http://happypenguin.org/show?Luola |access-date=2023-03-08|url-status=usurped|archive-date=2005-05-14}}</ref> ''[[M.A.R.S. (video game)|M.A.R.S.]]'',<ref>{{cite web|last=Holm |first=Joshua Allen|date=2018-01-08|title=5 arcade-style games for Linux |url=https://opensource.com/article/18/1/arcade-games-linux |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> ''[[Meat Fighter - The Weiner Warrior]]'',<ref name="Intelligent" /> ''[[Hikou no mizu]]'',<ref>{{cite web|url=https://framalibre.org/content/hikou-no-mizu|title=Hikou no mizu|website=Frama libre|access-date=2023-10-01}}</ref> ''[[Moag]]'',<ref>{{cite web|url=https://nixbit.com/software/moagg-review/|title=Moagg 0.18 review  |website=Nixbit|access-date=2023-03-08}}</ref> ''[[OilWar]]'',<ref>{{cite web|url=https://nixbit.com/software/oilwar-review/|title=OilWar 1.2.1 review  |website=Nixbit|access-date=2023-04-21}}</ref> ''[[osu!]]'', ''[[Osgg]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_K-O_files/OldSkoolGravityGame-12127.html|title=OldSkoolGravityGame|website=The Linux Game Book|access-date=2023-03-08}}</ref> ''[[Orbital Eunuchs Sniper]]'',<ref>{{cite web|url=https://www.linuxlinks.com/OrbitalEunuchs/|title=Orbital Eunuchs Sniper|date=2023-10-29|first=Steve|last=Emms|website=LinuxLinks|access-date=2023-12-09}}</ref> ''[[Overgod]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_K-O_files/Overgod-12220.html|title=Overgod|website=The Linux Game Book|access-date=2023-03-08}}</ref> ''[[Powermanga]]'',<ref>{{cite magazine|date=December 22, 2015|title=Powermanga|url=https://www.pressreader.com/australia/linux-format/20151222/282394103399790|magazine=[[Linux Format]]|location=[[Australia]]|publisher=[[Future plc]]|access-date=2023-02-08}}</ref><ref>{{cite web |last=Doane|first=J. Neil |date=15 March 2018|title=Open-Source Gaming for Linux |url=http://noframes.linuxjournal.com/articles/culture/0026.html/ |website=[[Linux Journal]]|archive-url=https://web.archive.org/web/20010628031000/http://noframes.linuxjournal.com/articles/culture/0026.html/ |access-date=2023-02-08|archive-date=28 June 2001 }}</ref> ''[[Ri-li]]'',<ref>{{cite web|url=https://nixbit.com/software/ri-li-review/|website=Nixbit|title=Ri-li 2.0.0 review|access-date=2023-03-08}}</ref> ''[[Super Transball 2]]'',<ref>{{cite web|access-date=2023-03-08|title=Super Transball 2|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_R-S_files/Super_Transball_2-13045.html|website=The Linux Game Book}}</ref> ''[[Technoball Z]]'',<ref>{{cite web|url=https://www.indieretronews.com/2015/04/tecnoball-z-unreleased-amiga-arkanoid.html|title=Tecnoball Z - Unreleased Amiga Arkanoid style game sees light of day!|website=Indie Retro News|date=2015-04-19|access-date=2023-03-08}}</ref> ''[[The Sheep Killer]]'',<ref>{{cite web|url=https://nixbit.com/software/the-sheep-killer-review/|title=The Sheep Killer 1.1 review |website=Nixbit|access-date=2023-04-21}}</ref> ''[[Variations on Rockdodger]]'',<ref>{{cite web|url=https://nixbit.com/software/variations-on-rockdodger-review/|title=Variations on Rockdodger 0.4 review |website=Nixbit|access-date=2023-04-21}}</ref> ''[[Warlock's Gauntlet]]'',<ref>{{cite web|url=https://www.ubuntuvibes.com/2012/03/linux-action-rpg-game-warlocks-gauntlet.html|archive-url=https://web.archive.org/web/20120422125504/http://www.ubuntuvibes.com/2012/03/linux-action-rpg-game-warlocks-gauntlet.html|url-status=usurped|archive-date=22 April 2012|title=Linux Action RPG Game 'Warlock's Gauntlet' Updated|website=Ubuntu Vibes|date=2012-03-22|access-date=2023-12-09}}</ref> and ''[[Zorn (video game)|Zorn]]'',<ref>{{cite web|url=https://nixbit.com/software/zorn-review/|title=Zorn 0.1.6 review  |website=Nixbit|access-date=2023-02-12}}</ref> have been able to carve out their own niches.

A number of these games and those mentioned earlier and later in this section have even received mainstream press coverage<ref>{{cite news |last=Anderson |first=Lee |date=December 20, 2000 |title=Top 10 Linux games for the holidays |url=http://archives.cnn.com/2000/TECH/computing/12/20/linux.games.idg/index.html |publisher=[[CNN]] |access-date=2008-06-08 |archive-url=https://web.archive.org/web/20041206174427/http://archives.cnn.com/2000/TECH/computing/12/20/linux.games.idg/index.html |archive-date=December 6, 2004|url-status=dead}}</ref> and commercial compilations,<ref>{{cite web|url=https://usk.de/en/usktitle/15274/|title=OpenSource GamePower Vol.2|website=Unterhaltungssoftware Selbstkontrolle|date=2006-01-06|access-date=2023-03-11}}</ref> and have helped to establish free gaming as a moderately popular pastime. Most [[Linux gaming#Free and open-source games|prominently]] among [[Linux]]<ref name="Partho">{{cite web|author=Partho|date=28 March 2009|title=Top 10 Free Linux Games in 2009|url=http://tech.gaeatimes.com/index.php/archive/top-10-free-linux-games-in-2009/ |website=The Gaea Times|access-date=2022-07-20|archive-url=https://web.archive.org/web/20120415141523/http://tech.gaeatimes.com/index.php/archive/top-10-free-linux-games-in-2009/ |archive-date=2012-04-15}}</ref> users and other free [[Unix-like]] systems such as [[BSD]],<ref>{{cite web|first=Solène|last=Rapenne|title=Top 12 best opensource games available on OpenBSD|url=https://dataswamp.org/~solene/2021-03-07-openbsd-best-games.html|website=Data Swamp|date=2021-03-07|access-date=2023-02-06}}</ref> [[Solaris (operating system)|Solaris]],<ref>{{cite web|url=http://hub.opensolaris.org/bin/view/Community+Group+games/WebHome|archive-url=https://web.archive.org/web/20110312121637/http://hub.opensolaris.org/bin/view/Community+Group+games/WebHome|title=Games on OpenSolaris - Games List|website=XWiki|archive-date=2011-03-12|date=2009-10-26|access-date=2023-03-01}}</ref> [[Darwin (operating system)|Darwin]],<ref>{{cite web|url=http://src.gnu-darwin.org/ports/games/|title=Games|website=[[GNU-Darwin]]|access-date=2023-03-03}}</ref> [[ToaruOS]],<ref>{{cite web|url=https://codewalr.us/index.php?topic=1700.0|website=codewalr.us|title= ToaruOS - Unix-like "hobby" operating system|author=gameblabla|date=2016-11-08|access-date=2023-04-25|quote=''I ported Helicopters, one of my games, just to show you how easy you can port games to it.''}}</ref> [[Xv6]],<ref>{{cite web|url=https://fuel.edby.coffee/posts/how-we-ported-xv6-os-to-a-home-built-cpu-with-a-home-built-c-compiler/|website=Fuelled by Coffee|first=Takaya|last=Saeki|date=2020-10-04|access-date=2023-04-25|title=How we ran a Unix-like OS (Xv6) on our home-built CPU with our home-built C compiler|quote=''However, some teams put more energy into doing fun such as running games or playing music by connecting a speaker with their CPU. Group 6, to which I belonged, was a group of such people who loved entertainment, and we decided to run an OS as our team goal.''}}</ref> [[Fiwix]],<ref>{{cite web|url=https://www.fiwix.org/packages.html|title=Packages|website=[[Fiwix]]|access-date=2023-04-25|quote=''lxdoom-1.4.4''}}</ref> [[Redox (operating system)|Redox]],<ref>{{cite web|url=https://doc.redox-os.org/book/ch02-04-trying-out-redox.html|title=Trying Out Redox|website=[[Redox (operating system)|Redox]]|access-date=2023-04-25}}</ref><ref>{{cite web|url=https://www.phoronix.com/news/Redox-OS-Porting-Plans|website=[[Phoronix]]|title=The Current State & Plans For Porting Linux/BSD Software To Redox OS|first=Michael|last=Larabel|date=2024-02-13|access-date=2024-02-24|quote=''While not yet having accelerated graphics and their Wayland support is still some ways out, they have ported some games/emulators to Redox OS already like DOSBox, Neverball, OpenTTD, ScummVM, 2048, and others.''}}</ref> and [[SerenityOS]],<ref>{{cite web|url=https://ports.serenityos.net/#a-games|title=SerenityOS Ports - Games|access-date=2023-03-05}}</ref> but [[Mac gaming#Linux gaming and free software games|also some]] [[Macintosh (computer)|Macintosh]]<ref>{{cite web|url=http://news.softpedia.com/news/Six-Free-and-Must-Have-Games-for-Your-Mac-96944.shtml|archive-url=https://web.archive.org/web/20091213203544/http://news.softpedia.com/news/Six-Free-and-Must-Have-Games-for-Your-Mac-96944.shtml|title=Six Free and Must Have Games for Your Mac|first=Sergiu|last=Gatlan|website=[[Softpedia]]|date=2008-11-12|archive-date=2009-12-13|access-date=2023-04-02}}</ref> players and even a few [[Microsoft Windows]] gamers as well as [[OpenHarmony]] embedded open source platform.<ref>{{cite web |last=Bates |first=Kryzt |date=2023-04-10 |title=Developed based on the Cocos 2dx engine, the game "Happy Match" was successfully ported to OpenHarmony |url=https://www.gamingdeputy.com/developed-based-on-the-cocos-2dx-engine-the-game-happy-match-was-successfully-ported-to-openharmony/ |access-date=2023-04-25 |website=Gaming Deputy}}</ref><ref>{{cite web|first=Arjun|last=Krishnalal|title=Here Are Five Open Source Games for Windows You Can Play for Free|url=https://techwiser.com/open-source-games-for-windows/|website=TechWiser|date=2019-07-16|access-date=2023-02-07}}</ref> As well, open source games have been made available for [[Palm OS]],<ref>{{cite web|url=https://palmopensource.com/palmdb.php?category=9|title=Games|website=The PalmOS/WebOS Open Source Portal|access-date=2023-03-15}}</ref> [[Android (operating system)|Android]],<ref>{{cite web|last=Allen Holm |first=Joshua |date=2015-10-26|title=12 open source games for Android |url=https://opensource.com/life/16/10/12-open-source-games-android |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> and [[iOS]]<ref>{{cite web|title=Open Source iOS Game List – Source Code To Games In The App Store|url=https://maniacdev.com/open-source-ios-game-list-source-code-to-games-in-the-app-store|website=ManiacDev|date=2014-08-25|access-date=2023-02-07}}</ref> mobile devices. Additionally, these games provide options for a variety of alternative and [[hobbyist operating system|hobbyist system]]s,<ref>{{cite web|url=https://dl.acm.org/doi/fullHtml/10.5555/774727.774728|website=[[ACM Digital Library]]|title=Game Programming with the Simple DirectMedia Layer|first=Bob|last=Pendleton|quote=''SDL officially supports Linux, Windows, BeOS, Mac OS, Mac OS X, FreeBSD, OpenBSD, BSD/OS, Solaris and IRIX. SDL also works with Windows CE, AmigaOS, Atari, QNX, NetBSD, AIX, Tru64 UNIX and SymbianOS. However, those OSes are not yet officially supported. This means if you write your application using SDL, you can port it with minimal rework to all those OSes. SDL provides a portable way to write games and multimedia applications on every major OS currently in use.''}}</ref> including [[CP/M]],<ref>{{cite web|url=https://blog.steve.fi/writing_a_text_based_adventure_game_for_cp_m.html|title=Writing a text-based adventure game for CP/M|website=Debian & Free Software|date=2021-04-26|first=Steve|last=Kemp|access-date=2023-03-04}}</ref> [[OS/2]],<ref>{{cite web|url=https://www.os2world.com/wiki/index.php/List_of_Open_Source_Software#Games|title= List of Open Source Software - Games|website=OS/2 World|access-date=2023-03-04}}</ref><ref>{{cite web|url=https://opensource.com/life/15/7/linux-game-review-openttd|title=Linux game review: OpenTTD|website=[[Opensource.com]]|date=2015-07-21|first=Jason|last=Baker|access-date=2023-03-04|quote=''While it runs on a number of platforms (including some surprising ones, like ReactOS, BeOS, and OS/2), the Linux installation of OpenTTD is quick and easy.''}}</ref> [[BeOS]],<ref>{{cite web|url=https://stendhalgame.org/wiki/History#Year_2000|title=History - Year 2000|website=Stendhal project|access-date=2023-03-04|quote=''Also a BeOS version was released and hence Arianne was one of the first BeOS open source games.''}}</ref><ref>{{cite web|url=https://www.unixmen.com/let-the-battle-for-wesnoth-continue-with-latest-version-199/|title=Let 'The Battle for Wesnoth' continue with latest version 1.9.9|website=Unixmen|first=M.|last=Zinoune|date=2011|access-date=2023-03-04|quote=''It is multi-platform game, which is easy to install on Windows to MacOSX and open source platform such as FreeBSD, Open BSD, NetBSD and now historic BeOS.''}}</ref> [[RISC OS]],<ref>{{cite web|url=https://www.riscos.info/index.php/Games|title=Games|website=riscos.info|access-date=2023-04-26}}</ref><ref>{{cite web|url=http://www.riscos.info/packages/GamesDetails.html|title=Packages in category: Games|website=RISCOS.info|access-date=2023-03-04}}</ref><ref>{{cite web|publisher=[[Kickstarter]]|url=https://riscoscloverleaf.com/|title=RISC OS - Build the future OS for your power-saving computer|author=Cloverleaf RISC OS|access-date=2023-03-04|quote=''In addition to games in these emulators, a plethora of games have been ported to RISC OS from Linux and other platforms''}}</ref> [[QNX]],<ref>{{cite web|url=https://hackaday.com/2017/05/03/your-next-desktop-qnx/|title=Your Next Desktop… QNX?|website=[[Hackaday]]|first=Al|last=Williams|date=2017-05-03|access-date=2023-03-05|quote=''The rest of the adventure went fairly well. He managed to build SDL and port over some games.''}}</ref> [[IRIX]],<ref>{{cite web|archive-url=https://web.archive.org/web/20070320130133/http://www.sgi.com/fun/freeware/games.html|url=http://www.sgi.com/fun/freeware/games.html|title=SGI - Freeware - Games|archive-date=2007-03-20|access-date=2023-03-04}}</ref><ref>{{cite web|url=http://www.supertuxkart.de/stkirix.html|title=SuperTuxKart IRIX Screenshots|website=SupterTuxKart.de|access-date=2023-03-04}}</ref> [[MenuetOS]],<ref>{{cite web|url=https://cybernews.com/editorial/forget-windows-apples-and-penguins-enter-a-world-of-lost-oss/|title=Forget Windows, Apples, and Penguins: enter a world of 'lost' OSs|website=CyberNews|date=2021-09-28|first=Vilius|last=Petkauska|quote=''Impressively, MenuetOS is no thought experiment. To illustrate the point, the operating system ships with shareware versions of legendary games ’Quake’ and ‘Doom’.''}}</ref> [[Phantom OS]],<ref>{{cite web|url=https://github.com/dzavalishin/phantomuserland/tree/ac2ff0082cb49c98d6f89cd214b5f27fd1550485/phantom/apps|title=phantomuserland - apps|first=Dmitry|last=Zavalishin|website=[[GitHub]]|access-date=2023-04-25|quote=''doom... quake... tetris...''}}</ref> [[Genode]],<ref>{{cite web|url=https://genode.org/news/2009|title=Port of libSDL to Genode|website=[[Genode]]|date=2009-01-23|access-date=2023-04-26}}</ref> [[HelenOS]],<ref>{{cite web|url=http://www.helenos.org/wiki/UsersGuide/CommandReference|title=HelenOS Command Reference|website=[[HelenOS]]|access-date=2023-04-25|quote=''tetris - Fork of BSD Tetris game''}}</ref> [[SkyOS]],<ref>{{cite web|url=https://www.osnews.com/story/15724/skyos-beta-build-6179-released/|website=[[OSNews]]|title=SkyOS Beta Build 6179 Released|first=Tomasz|last=Dominikowski|date=2006-09-04|access-date=2023-04-24|quote=''This new build also includes new ports, such as Quake III, Python, SDL with OpenGL support, and much more.''}}</ref> [[TempleOS]],<ref>{{cite web|url=https://www.jwhitham.org/2015/07/porting-third-party-programs-to-templeos.html|date=2015-07-06|access-date=2023-03-25|title=Porting third-party programs to TempleOS|first=Jack|last=Whitham|quote=''Without graphics support, the proof-of-concept application is quite limited in what it can do. I therefore chose to port "frotz". This is an interpreter for Z-machine games. The system requirements are minimal, but it can be used to play perhaps thousands of "interactive fiction" (text adventure) games.''}}</ref> [[SymbOS]],<ref>{{cite web|url=http://www.symbos.de/apps.htm?3|title= Games for SymbOS|website=[[SymbOS]]|access-date=2023-04-25}}</ref><ref>{{cite web|url=https://www.indieretronews.com/2022/01/symbos-rather-impressive-z80.html|title=SymbOS - A rather impressive Z80 multitasking operating system gets a new release|website=Indie Retro News|date=2022-01-07|access-date=2023-04-25|quote=''You can not only play the latest 8bit version of Doom converted by Prodatron, but many other games such as Sakoban, 2048 and yes even Flappy Bird via this graphically impressive Z80 operating system.''}}</ref> [[FreeRTOS]],<ref>{{cite web|url=https://mcuoneclipse.com/2018/12/02/playing-zork-with-freertos-on-arm-in-three-different-ways/|title=Playing Zork with FreeRTOS on ARM in three different Ways|date=2018-12-02|first=Erich|last=Styger|website=MCU on Eclipse|quote=''I started my port of Zork for the NXP FRDM-K64F board using the port from Thomas Shane. You can find my port for the FRDM-K64F on GitHub (links at the end of this article). It should be fairly simple to port it to any other board. The game code has been converted to C using a converter (so the code looks rather ugly with lots of goto statements).''}}</ref> [[AmigaOS]]<ref>{{cite web|url=https://www.lemonamiga.com/games/list.php?list_license=Open%20Source%20Conversion|title=Open Source Conversion|website=Lemon Amiga Database|access-date=2023-03-04}}</ref><ref>{{cite web|url=https://blog.desdelinux.net/en/simutrans/|title=Simutrans: Free and Open Source Transport Simulation Game|website=From Linux|date=13 April 2022 |access-date=2023-03-04|quote=''Simutrans is an open source simulation game under the Artistic License 1.0 for Windows, AmigaOS, BeOS, Mac OS X and Linux that focuses on freight, passenger, mail and energy transport.''}}</ref> (plus [[WarpOS]]<ref>{{cite web|url=http://aminet.net/package/game/strat/stratagus|title=Stratagus port for AmigaOS 3 with WarpOS|date=2019-02-21|website=Amninet|access-date=2023-03-04}}</ref>), and [[MorphOS]],<ref>{{cite web|url=https://library.morph.zone/Games|title=Games|website=MorphOS Library|date=2009-12-20|access-date=2023-03-04|quote=''Many open source games have been ported to MorphOS, including several commercial games whose sources have been released, like id Software masterpieces Wolfenstein 3D, Doom, Doom II, Quake, Quake II and Quake III.''}}</ref> as well as later implementations such as [[FreeDOS]],<ref>{{cite web|url=https://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/distributions/1.2/repos/pkg-html/group-games.html|title=FreeDOS 1.2 Updates - Games|website=[[ibiblio]]|date=2022-07-31|access-date=2023-03-05}}</ref> [[ArcaOS]],<ref>{{cite web|url=https://os2ports.smedley.id.au/?page_id=63|title=Unix Ports for OS/2 & ArcaOS|first=Paul|last=Smedley|access-date=2023-03-04}}</ref> [[ReactOS]],<ref>{{cite web|url=https://ubunlog.com/en/el-popular-juego-open-source-al-estilo-mario-llega-a-su-nueva-version-supertux-0-6-1/|website=Ubunlog|title=The popular open source Mario-style game arrives in its new version SuperTux 0.6.1|date=17 December 2019 |access-date=2023-03-04|quote=''The game was originally released for Linux, Windows, ReactOS, Mac OS X. Versions for other computers include FreeBSD, BeOS, among others.''}}</ref> [[Haiku (operating system)|Haiku]],<ref>{{cite web|url=https://sudonull.com/post/6296-Haiku-operating-system-porting-applications-and-creating-packages|title=Haiku operating system: porting applications and creating packages|website=Sudo Null IT News|date=2018|last=Bergseth|access-date=2023-03-04}}</ref><ref>{{cite web|url=https://distrita.com/openttd-open-source-beos-haiku/|title=OpenTTD is out for open source BeOS, Haiku|website=Distrita|date=2016-05-06|first=Michal|last=Bergseth|access-date=2023-03-04}}</ref> [[magnussoft ZETA|ZETA]],<ref>{{cite web|url=https://www.osnews.com/story/17518/review-zeta-15/|website=[[OSNews]]|title=Review: Zeta 1.5|first=Thom|last=Holwerda|date=2007-03-19|access-date=2023-05-01|quote=''Magnussoft also included a few emulators (including graphical frontends) in this release, two of which I want to highlight: DOSbox and Qemu. Using the DosBox emulator, I was able to play some old DOS games (Keen!), even though I had to edit the DOSbox config file in order to get some decent performance. The QemuVM frontend had problems in that it would not work correctly when using physical disks instead of image files.''}}</ref> [[KolibriOS]],<ref>{{cite web|url=https://cybernews.com/editorial/forget-windows-apples-and-penguins-enter-a-world-of-lost-oss/|title=Forget Windows, Apples, and Penguins: enter a world of 'lost' OSs|website=CyberNews|date=2021-09-28|first=Vilius|last=Petkauska|quote=''Kolibri features a rich set of applications that include a word processor, image viewer, graphical editor, web browser, and well over 30 exciting games,” states the authors of the operating system.''}}</ref> [[Syllable Desktop]],<ref>{{cite web|url=https://economictimes.indiatimes.com/tech-life/5-alternatives-to-microsoft-windows/syllable-desktop/slideshow/52499325.cms|title=5 alternatives to Microsoft Windows|website=[[The Economic Times]]|date=2016-05-30|access-date=2023-03-04|quote=''Some of the other things you can download for free include games, rescue software and a VNC viewer.''}}</ref> [[AmigaOS 4]],<ref>{{cite web|url=https://www.amigaos.net/license/open-source|title=Open Source|website=[[AmigaOS 4|AmigaOS]]|publisher=[[Hyperion Entertainment]]|access-date=2023-03-04}}</ref> and [[AROS]].<ref>{{cite web|url=http://www.dusabledanslherbe.eu/AROSPage/STK.46.html|archive-url=https://web.archive.org/web/20140320231619/http://www.dusabledanslherbe.eu/AROSPage/STK.46.html|website=AROS Page|title=SuperTuxKart, a Mario Kart open source clone.|archive-date=2014-03-20}}</ref><ref>{{cite web|url=http://blog.wolfire.com/2010/06/Lugaru-comes-to-the-Amiga|title=Lugaru comes to the Amiga|date=2010-06-27|access-date=2023-03-04|first=Jeffrey|last=Rosen|website=[[Wolfire Games]]}}</ref> Particularly prolific is New Breed Software, which offers games for all or most of those systems,<ref>{{cite web |last=Wilson |first=Hamish | date=2022-09-12 | title=Building a Retro Linux Gaming Computer - Part 18: Run Away and Join the Circus | url=https://www.gamingonlinux.com/2022/09/building-a-retro-linux-gaming-computer-part-18-run-away-and-join-the-circus/ | website=GamingOnLinux | quote=''Bill Kendrick has also created a number of other arcade conversions, edutainment, and experimental software toys which he ports to the widest possible range of platforms, all of which can still be found on the New Breed Software website.''|access-date=2023-03-04}}</ref> as well as for vintage computers such as the [[Atari 8-bit]], [[Atari ST]], and [[Amiga]], [[homebrew (software)|homebrew]] for several [[Video game console|video game consoles]] such as the [[Dreamcast|Sega Dreamcast]], [[PlayStation 2|Sony PlayStation 2]] and [[Wii|Nintendo Wii]], handhelds such as the [[PlayStation Portable|Sony PSP]], [[Nintendo DS]] and [[GP2X]], as well as mobile platforms such as the [[Agenda VR3]], [[OpenZaurus]], [[Maemo]], and [[Symbian|Symbian OS]].<ref>{{cite web|url=http://www.newbreedsoftware.com/|website=New Breed Software|title=Welcome|first=Bill|last=Kendrick|access-date=2023-03-04}}</ref>

[[File:Bos wars 2 5.png|thumb|left|200px|''[[Bos Wars]]'']]

Strategy and simulation games have been a prevalent force in free software gaming,<ref name="AC20071219">{{cite web |author=MrCopilot|date=19 December 2007|title=Free RTS: Open Source Gamer's Guide to Free Real Time Strategy Games|url=http://voices.yahoo.com/free-rts-open-source-gamers-guide-free-real-time-720261.html|website=[[Yahoo! Voices]] |access-date=2022-07-20|archive-url=https://web.archive.org/web/20120629182609/http://voices.yahoo.com/free-rts-open-source-gamers-guide-free-real-time-720261.html|archive-date=2012-06-29|url-status=dead}}</ref> partly due to the lack of proprietary options for free software operating systems as compared to other genres like [[first-person shooter]]s and [[role-playing game]]s.<ref name="Monks" /><ref>{{cite web|last=Rankin |first=Dave |date=2019-07-18 |title=5 Open Source First-Person Shooter Video Games |url=https://www.lifewire.com/open-source-first-person-shooter-video-games-2532903 |website=Lifewire |access-date=2023-02-04}}</ref> ''Xconq'' and ''XBattle'', and later ''Freeciv'' and ''Lincity'', began the trend, and were followed by other clone titles like ''[[FreeCol]]'', ''[[UnCiv]]'',<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2020/01/unciv-a-free-and-open-source-remake-of-civilization-v/|title=UnCiv, a free and open source remake of Civilization V|website=GamingOnLinux|date=2020-01-07|access-date=2023-02-06}}</ref> ''[[Crimson Fields]]'',<ref>{{cite web|url=https://freewargamer.com/crimson-fields-open-source-war-strategy-game/|title=Crimson Fields Open Source War Strategy Game|website=FreeWargamer|first=Dave|last=Mackey|date=15 August 2012 |access-date=2023-03-15}}</ref> ''[[C-evo]]'', ''[[LordsAWar!]]'', ''[[Freelords]]'', ''[[Civil (video game)|Civil]]'',<ref>{{cite web|url=https://nixbit.com/software/civil-review/|title=Civil 0.83 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[LGeneral]]'',<ref>{{cite web|url=https://nixbit.com/software/lgeneral-1.2-review/|title= LGeneral 1.2 Beta12 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[Open General]]'',<ref>{{cite web|url=https://betanews.com/2014/10/16/open-general-and-openpanzer-are-classic-turn-based-strategy-games/|title=Open General and OpenPanzer are classic turn-based strategy games|website=BetaNews|first=Mike|last=Williams|date=2015|access-date=2023-03-15}}</ref> ''[[OpenPanzer]]'',<ref>{{cite web|url=http://armchairgeneral.com/no-plan-survives-contact-with-the-enemy-open-panzer-computer-game-review.htm|title='No plan survives contact with the enemy' Open Panzer Computer Game Review|website=Armchair General Magazine|first=Rick|last=Martin|date=2019-02-07|access-date=2023-03-15}}</ref> ''[[OpenCity]]'', ''[[OpenRTS]]'',<ref>{{cite web|url=https://nixbit.com/software/openrts-review/|title=OpenRTS 0.2 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[TripleA]]'',<ref>{{cite web|website=It's FOSS|first=John|last=Paul|url=https://itsfoss.com/triplea-game-review/|title=TripleA - An Open Source Strategy Game to Keep You Busy for Hours|date=2019-10-29|access-date=2023-02-06}}</ref> ''[[Mars, Land of No Mercy]]'',<ref>{{cite web|url=https://nixbit.com/software/mars--land-of-no-mercy-review/|title=Mars, Land of No Mercy 0.2.0 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[Ophiuchus (video game)|Ophiuchus]]'',<ref>{{cite web|url=https://nixbit.com/software/ophiuchus-review/|title=Ophiuchus 0.3.2.1 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[Mindustry]]'',<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2018/12/mindustry-an-open-source-sandbox-tower-defense-game-thats-a-little-like-factorio/|title=Mindustry, an open source sandbox Tower Defense game that's a little like Factorio|website=GamingOnLinux|date=2018-12-10|access-date=2023-02-06}}</ref> ''[[Tanks of Freedom]]'',<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2015/10/have-you-tried-tanks-of-freedom-an-open-source-strategy-game/|title=Have You Tried Tanks Of Freedom? An Open Source Strategy Game|website=GamingOnLinux|date=2015-10-11|access-date=2023-02-06}}</ref> ''[[OpenRA]]'', ''[[OpenRCT2]]'', ''[[OpenTTD]]'', ''[[Simutrans]]'', ''[[StormWar]]'',<ref>{{cite web|url=https://nixbit.com/software/stormwar-review/|title=StormWar 0.15.1 review |website=Nixbit|access-date=2023-03-21}}</ref> ''[[Advanced Strategic Command]]'',<ref>{{cite web|url=https://freewargamer.com/advanced-strategic-command-an-open-source-turn-based-strategy-game/|title=Advanced Strategic Command – An Open Source Turn-Based Strategy Game|website=FreeWargamer|first=Dave|last=Mackey|date=7 August 2012 |access-date=2023-03-15}}</ref>  ''[[Tenes Empanadas Graciela]]'', ''[[Endgame: Singularity]]'', ''[[Thousand Parsec]]'', ''[[Unknown Horizons]]'' and ''[[Widelands]]''.

The [[Stratagus]] project began as an attempt to recreate the proprietary ''[[Warcraft II]]'' engine, under the name FreeCraft. [[Blizzard Entertainment]] sent a [[cease and desist]] letter in 2003 over the use of the name "craft" in comparison to ''[[Warcraft]]'' and ''[[StarCraft]]''.<ref>{{cite web|last=Wen|first=Howard |date=15 July 2004|title=Stratagus: Open Source Strategy Games |url=http://www.linuxdevcenter.com/pub/a/linux/2004/07/15/stratagus.html |website=LinuxDevCenter.com |access-date=2022-07-20|archive-url=https://web.archive.org/web/20111218162202/http://linuxdevcenter.com/pub/a/linux/2004/07/15/stratagus.html |archive-date=2011-12-18|url-status=dead}}</ref> Though the earlier free software strategy game ''CRAFT: The Vicious Vikings'' shared the name "craft" without controversy.<ref name="Kroll">{{cite magazine |title=GAMES FOCUS|first=Jason|last=Kroll |url=http://www.linuxjournal.com/article/3751 |magazine=[[Linux Journal]]|date=2000-01-01|access-date=2022-07-20|archive-url=https://web.archive.org/web/20090107231722/http://www.linuxjournal.com/article/3751 |archive-date=2009-01-07}}</ref> With the new, legally inoffensive name Stratagus and the old FreeCraft assets renamed ''Aleona's Tales'', the team began work on a new strategy game called ''[[Bos Wars]]''.

[[File:Speed Dreams Ruudskogen.png|thumb|right|200px|''[[Speed Dreams]]'']]

Development on this game still continues, as well as the modern ''Warcraft II'' port ''Wargus''. Other games branched out of the engine project as well such as the ''Battle for Mandicor'' and ''Astroseries'' projects, the ''StarCraft'' port attempt ''Stargus'', and most recently ''Wyrmsun''.<ref>{{cite web |last=Dawe |first=Liam | date=2015-11-11 | title=Wyrmsun, A 2D RTS Game Inspired By The Classics, On SteamOS & Linux | url=https://www.gamingonlinux.com/2015/11/wyrmsun-a-2d-rts-game-inspired-by-the-classics-on-steamos-linux/| website=GamingOnLinux | access-date=2023-02-02}}</ref> After the Stratagus example, other real-time strategy games were developed, such as ''[[Globulation 2]]'', which experiments with game management mechanics, the similarly experimental ''[[Liquid War]]'', multiplayer military game ''[[The Urgent Decision|TUD]]'',<ref name="Kroll"/> the [[claymation]] based ''[[Dark Oberon]]'',<ref>{{cite web|url=https://download.tuxfamily.org/sdtraces/BottinHTML/Bottin_D-J_files/Dark_Oberon-10740.html|title=Dark Oberon|website=The Linux Game Book|access-date=2023-03-11}}</ref> and the 3D projects ''[[0 A.D. (video game)|0 A.D.]]'' (a former freeware project), ''[[Boson (video game)|Boson]]'',<ref>{{cite web|url=https://nixbit.com/software/battles-of-antargis-review/|title=Boson 0.13 review  |website=Nixbit|access-date=2023-02-11}}</ref> ''[[Battles of Antargis]]'',<ref>{{cite web|url=https://nixbit.com/software/boson-review/|title=Battles of Antargis 0.1.9 review |website=Nixbit|access-date=2023-02-12}}</ref> Spring and ''[[Glest]]''.<ref name="Partho" />

Racing games, another uncommon Linux commercial genre, have also seen development.<ref>{{cite web |last=Wilson |first=Hamish | date=2023-01-30 | title=Building a Retro Linux Gaming Computer - Part 23: Ready, Set, Go! | url=https://www.gamingonlinux.com/2023/01/building-a-retro-linux-gaming-computer-part-23-ready-set-go/ | website=GamingOnLinux | access-date=2023-02-02}}</ref> One of the earliest was ''[[RARS]]'', which evolved following the principle of [[Fork (software development)|forking]] into ''[[TORCS]]'' and then ''[[Speed Dreams]]''. ''[[MicroRacers]]''<ref>{{cite web|url=https://nixbit.com/software/microracers-review/|title=Microracers 0.2 review |website=Nixbit|access-date=2023-02-11}}</ref> and ''[[Toy Cars]]''<ref>{{cite web|url=https://nixbit.com/software/toy-cars-review/|title=Toy Cars 0.3.2 review |website=Nixbit|access-date=2023-02-11}}</ref> are inspired by ''[[Micro Machines (video game series)|Micro Machines]]'', while ''[[Ultimate Stunts]]''<ref>{{cite web|url=https://nixbit.com/software/ultimate-stunts-review/|title= Ultimate Stunts 0.6.3.1 review |website=Nixbit|access-date=2023-02-11}}</ref> and ''[[Stunt Rally]]'',<ref>{{cite web |last=Dawe|first=Liam |date=11 May 2014|title=Stunt Rally Has A New Version Released With New Tracks, New Graphics & More |url=https://www.gamingonlinux.com/2014/05/stunt-rally-has-a-new-version-released-with-new-tracks-new-graphics-more/ |website=GamingOnLinux|access-date=2023-02-03}}</ref> are rooted in ''[[Stunts (video game)|Stunts]]''. Other racing games include versions of ''[[Racer (video game)|Racer]]'', ''[[VDrift]]'', ''[[Rigs of Rods]]'', ''[[Slune]]'',<ref>{{cite web|url=https://nixbit.com/software/slune-review/|title=Slune 1.0.10 review |website=Nixbit|access-date=2023-02-12}}</ref> ''[[GLtron]]'' and ''[[Armagetron Advanced]]'', ''[[YORG (video game)|YORG]]'',<ref>{{cite web |last=Dawe|first=Liam |date=15 March 2018|title=Yorg, a free and open source racing game with some hilarious handling |url=https://www.gamingonlinux.com/2018/03/yorg-a-free-and-open-source-racing-game-with-some-hilarious-handling/ |website=GamingOnLinux|access-date=2023-02-03}}</ref> the ''[[Mario Kart]]''–inspired ''[[SuperTuxKart]]'', ''[[Elasto Mania]]'' clone ''[[X-Moto]]'', ''[[SkyRoads (video game)|SkyRoads]]'' imitator ''[[Orbit-Hopper]]'',<ref>{{cite web|url=https://nixbit.com/software/orbit-hopper-review/|title=Orbit-Hopper 1.13 review|website=Nixbit|access-date=2023-02-06}}</ref> sledding game ''[[Extreme Tux Racer]]'', the text based ''[[ZRacer]]'',<ref>{{cite web|url=https://nixbit.com/software/zracer-review/|title=ZRacer 1.0 review|website=Nixbit|access-date=2023-02-12}}</ref> and the top-down ''[[Trophy (video game)|Trophy]]'',<ref>{{cite web |last=Doane|first=J. Neil |date=2001-06-06|title=Open-Source Gaming for Linux |url=http://noframes.linuxjournal.com/articles/culture/0026.html/ |website=[[Linux Journal]]|archive-url=https://web.archive.org/web/20010628031000/http://noframes.linuxjournal.com/articles/culture/0026.html/ |access-date=2023-02-08|archive-date=28 June 2001 }}</ref> ''[[Dust Racing 2D]]'' and ''Pixel Wheels''.<ref>{{cite web|url=https://connectwww.com/pixel-wheels-retro-top-down-race-game/64979/|title=Pixel Wheels Retro Top-Down Race Game|author=Manikandan|website=connectWWW.com|date=2022-11-09|access-date=2023-02-06}}</ref>

[[File:One Hour One Life Screenshot.png|thumb|left|200px|''[[One Hour One Life]]'']]

''[[WorldForge]]'', ''[[Ryzom]]'', ''[[Crossfire (1992 video game)|Crossfire]]'', ''[[Solipsis]]'', ''[[Illarion (video game)|Illarion]]'',<ref>{{cite web|first=Beau|last=Hindman|title=Rise and Shiny: Illarion|url=https://www.engadget.com/2012-06-17-rise-and-shiny-illarion.html|website=[[Engadget]]|date=2012-06-17|access-date=2023-02-08}}</ref> and ''[[The Mana World]]''<ref>{{cite web|title=The Mana World Review: Open-Source MMO|url=https://www.onrpg.com/news/the-mana-world-review-open-source-mmo/|website=OnRPG|date=2009-12-24|access-date=2023-02-06}}</ref><ref>{{cite web|first=Danny |last=Stieben|title=The Mana World: An Open Source MMORPG For All Platforms|url=https://www.makeuseof.com/tag/the-mana-world-an-open-source-mmorpg-for-all-platforms/|website=MakeUseOf|date=2013-10-21|access-date=2023-02-06}}</ref> are further examples of increasing diversification, offering free [[massively multiplayer online role-playing game]] worlds. Single-player role-playing games are also available, such as ''[[A Dark Room]]'', ''[[Heroes of Allacrost]]'',<ref>{{cite web|author=Rilogator|url=https://launchpartygaming.com/features/2018/hero-of-allacrost-developer-interview/|title=Hero of Allacrost — Developer Interview|website=Launch Party Gaming|date=2018-08-21|access-date=2023-02-07}}</ref> ''[[Valyria Tear]]'',<ref>{{cite web|url=https://fossgames.com/valyria-tear-2d-jrpg-medieval-fantasy/|title=Valyria Tear – Free 2D JRPG Game with medieval-fantasy theme |date=2022-03-11|access-date=2023-02-11|website=FOSS Games}}</ref> ''[[Empty Clip]]'',<ref>{{cite web|url=https://nixbit.com/software/empty-clip-review/|title= Empty Clip 1.0.2 review   |website=Nixbit|access-date=2023-02-11}}</ref> ''[[Summoning Wars]]'',<ref>{{cite web|url=https://connectwww.com/summoning-wars-free-role-playing-game/1592/|title=Summoning Wars – free role-playing game|author=Manikandan|website=connectWWW.com|date=2011-11-09|access-date=2023-02-12}}</ref> ''[[GNU FreeDink]]'',<ref>{{cite web |last=Larabel |first=Michael |date=2019-02-16 |title=GNU's RPG/Adventure Game Updated For SDL2, Defaults To OpenGL Rendering |url=https://www.phoronix.com/news/GNU-FreeDink-109.6-Released |website=Phoronix |access-date=2023-02-12}}</ref> ''[[FLARE (video game)|FLARE]]'',<ref>{{cite web|website=[[PC Gamer]]|first=Tom|last=Sykes|url=https://www.pcgamer.com/flare-a-free-open-source-rpg-with-tons-of-potential/|title=Flare: a free open source RPG with tons of potential|date=2012-09-27|access-date=2023-02-08}}</ref> ''[[Heroine Dusk]]'',<ref>{{cite web|first=Ishaan|last=Sahdev|url=https://www.siliconera.com/heroine-dusk-a-retro-style-dungeon-crawler-right-in-your-browser/|title=Heroine Dusk, A Retro Style Dungeon Crawler Right In Your Browser|website=[[Siliconera]]|date=2013-05-19|access-date=2023-02-07}}</ref> ''[[FreedroidRPG]]'',<ref>{{cite web |last=Dawe|first=Liam |date=23 January 2023|title=Free open source RPG 'FreedroidRPG' arrives on Steam |url=https://www.gamingonlinux.com/2023/01/free-open-source-rpg-freedroidrpg-arrives-on-steam/ |website=GamingOnLinux|access-date=2023-02-03}}</ref> the ''[[Cube World]]'' inspired ''Veloren'',<ref>{{cite web|first=Liam|last=Dawe|url=https://www.gamingonlinux.com/2020/05/veloren-an-open-source-rpg-inspired-by-cube-world-has-a-new-release/|title=Veloren, an open source RPG inspired by Cube World has a new release|website=GamingOnLinux|date=2021-04-25|access-date=2023-02-06}}</ref> and the ''[[Pokémon (video game series)|Pokémon]]'' derived ''[[Tuxemon]]'',<ref>{{cite web|url=https://connectwww.com/tuxemon-open-source-monster-fighting-turn-based-rpg-game/64358/|title=Tuxemon Open Source Monster Fighting Turn-based RPG Game|author=Manikandan|website=connectWWW.com|date=2022-08-06|access-date=2023-02-06}}</ref> ''[[OPMon]]'',<ref>{{cite web|first=Luigys|last=Toro|url=https://blog.desdelinux.net/en/opmon-juego-aventura-linux-inspirado-pokemon/|title=OPMon: A Pokemon-Inspired Adventure Game for Linux|website=From Linux|date=2021-11-17|access-date=2023-02-07}}</ref> and ''[[Pigeon Ascent]]''.<ref>{{cite web|first=Dennis|last=Payne|url=https://fedoramagazine.org/from-godot-to-rpm/|title=From Godot to RPM|website=[[Fedora (operating system)|Fedora Magazine]]|date=2018-03-26|access-date=2023-02-07}}</ref>

The rise of the [[independent game development]] in the 2000s and 2010s was partly driven by the growing ecosystem of open-source libraries and engines; indie developers utilized the open-source ecosystem due to good [[cross-platform]] capabilities and availability for limited financial burden.<ref name="Blake" /> [[Game jam]]s such as [[Ludum Dare]] and [[Game Off]] are often run on open source principles, frequently using free frameworks such as [[pygame]], [[Arcade (framework)|Arcade]],<ref>{{cite web|url=https://opensource.com/article/18/4/easy-2d-game-creation-python-and-arcade|title=How to create a 2D game with Python and the Arcade library|website=[[Opensource.com]]|first=Paul|last=Vincent Craven|date=2018-04-24|access-date=2023-03-28}}</ref> [[Wasabi2D]],<ref>{{cite web|url=https://ssiddique.info/python-game-engines.html|title=21 Python Game Engines in 2023|first=Aqsa|last=Sheikh|date=2022-08-02|access-date=2023-03-25}}</ref> and [[Ren'Py]] for [[Python (programming language)|Python]], [[Ruby2D]]<ref>{{cite web|url=https://exarhouleasjohn.medium.com/finally-a-ruby-2d-guide-edc76163adfc|website=[[Medium (website)|Medium]]|title=Finally a Ruby 2d guide!!!|first=John|last=Ex|date=2020-10-19|access-date=2023-03-25}}</ref> and [[Gosu (game framework)|Gosu]]<ref>{{cite web|url=https://www.engineyard.com/blog/create-ruby-games-using-gosu/|title=The Ruby Unbundled Series: Creating Games with Gosu|website=Engine Yard|date=2022-03-18|access-date=2023-03-25}}</ref> for [[Ruby (programming language)|Ruby]], [[GGEZ]]<ref>{{cite web|url=https://hub.packtpub.com/rust-as-a-game-programming-language-is-it-any-good/|website=Packt Hub|title=Rust as a Game Programming Language: Is it any good?|first=Amarabha|last=Banerjee|date=2018-09-22|access-date=2023-03-28}}</ref> for [[Rust (programming language)|Rust]], [[LibGDX]] for [[Java (programming language)|Java]], [[MiniGDX]]<ref name="gamefromscratch.com"/> for [[Kotlin (programming language)|Kotlin]], [[LÖVE (game framework)|LÖVE]] and [[Solar2D]] for [[Lua (programming language)|Lua]], [[Ebitengine]]<ref>{{cite web|url=https://golangprojectstructure.com/creating-cool-games-with-ebiten-in-go/|title=Creating Cool Games With Ebiten|date=2021-12-22|first=James|last=Smith|access-date=2023-03-26}}</ref> for [[Go (programming language)|Go]], [[Phaser (game framework)|Phaser]], [[Panda (game engine)|Panda]],<ref>{{cite web|url=https://ourcodeworld.com/articles/read/308/top-15-best-open-source-javascript-game-engines|title=Top 15: Best open source javascript game engines|first=Carlos|last=Delgado|date=2020-06-15|access-date=2023-03-25}}</ref> and [[SuperPower (framework)|SuperPower]] for [[HTML5]],<ref>{{cite web|archive-url=https://web.archive.org/web/20230326003351/https://socialmirror.in/public/games/best-open-source-game-engine|archive-date=2023-03-26|url=https://www.socialmirror.in/public/games/best-open-source-game-engine|website=Social Mirror|title=Collection of Best open-source game engine|first=Nitin|last=Nair|date=2022|access-date=2023-03-25}}</ref> as well as [[nCine]],<ref>{{cite web|url=https://www.phoronix.com/news/nCine-Game-Engine|title=nCine Is An Interesting Open-Source 2D Game Engine|first=Michael|last=Larabel|date=2019-06-01|website=[[Phoronix]]|access-date=2023-03-26}}</ref> [[Solarus]],<ref>{{cite web|url=https://www.pcgamer.com/zeldas-most-dedicated-fan-game-developers-built-an-engine-anyone-can-use/|website=[[PC Gamer]]|title=Zelda's most dedicated fan game developers built an engine anyone can use|first=Jessica|last=Famularo|date=2020-04-14|access-date=2023-03-26}}</ref> [[Starling Framework|Starling]], [[MonoGame]], [[Twine (software)|Twine]], and  [[Cocos2d]].<ref>{{cite web|last=Finley |first=Klint |date=2022-10-18|title=Open source is democratizing video game development |url=https://github.com/readme/featured/open-source-democratizing-video-games/ |website=[[GitHub]] |access-date=2023-02-05}}</ref><ref>{{cite web|last=Elmenreich |first=Wilfried |date=2018-04-27|title=How to Game Jam |url=https://opensource.com/article/17/12/how-to-gaming-jam-development |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> Educational languages such as [[Snap! (programming language)|Snap!]] and [[Scratch (programming language)|Scratch]] are also free software,<ref>{{cite web|last=Sprague |first=Jared |date=2017-12-21|title=How I designed a game with Scratch |url=https://opensource.com/article/18/4/designing-game-scratch-open-jam |website=[[Opensource.com]] |access-date=2023-01-30}}</ref><ref>{{cite web|last=Shapiro |first=Phil |date=2012-10-08|title=Scratch, a programming language for kids |url=https://opensource.com/education/12/10/scratch-programming-language-kids |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> as is [[The Wick Editor]] animation and game creation tool.<ref>{{cite web|url=https://blog.tcea.org/the-wick-editor/|title=Animate Learning with The Wick Editor|first=Miguel|last=Guhlin|date=2020-03-12|access-date=2023-09-16|website=TechNotes Blog|publisher=Conference for Educational Coaches}}</ref> Individual developers such as [[Jason Rohrer]], creator of ''[[Passage (video game)|Passage]]'' and ''[[One Hour One Life]]'', and [[Kenta Cho]] have embraced open source.<ref>{{cite web |last=Dawe|first=Liam |date=16 March 2018|title=The developer of One Hour One Life on keeping games code & assets open and not launching on Steam |url=https://www.gamingonlinux.com/2018/03/the-developer-of-one-hour-one-life-on-keeping-games-code-assets-open-and-not-launching-on-steam/ |website=GamingOnLinux|access-date=2023-02-03}}</ref>

===Greater organization===
[[File:STK track 7.png|thumb|right|200px|''[[SuperTuxKart]]'']]

Despite its initial roots as individual projects, the free software gaming scene has been becoming progressively more organized. The roots of this even go back as far as the games created for the GNU Project and to the original larger-scale free software projects like ''Freeciv''. Still, for the most part free game development had very little organization throughout its history.<ref>{{cite web|last=Sogge Heggen |first=Erlend |date=2011-02-08|title=Open source games: It's a team effort |url=https://opensource.com/life/11/2/open-source-games-it%E2%80%99s-team-effort |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> Popular games were generally separate efforts, except for instances of people working on them known for other projects such as Ingo Ruhnke (''Pingus''), Bill Kendrick (''SuperTux'') and Steve Baker (''TuxKart'').<ref>{{cite web |last=Wilson |first=Hamish | date=2022-09-12 | title=Building a Retro Linux Gaming Computer - Part 18: Run Away and Join the Circus | url=https://www.gamingonlinux.com/2022/09/building-a-retro-linux-gaming-computer-part-18-run-away-and-join-the-circus/ | website=GamingOnLinux | access-date=2023-02-02 | quote=''He is most famous for starting work on the platformer SuperTux and crafting the drawing program Tux Paint, helping to popularize Tux as a gaming icon with others in the Tux4Kids initiative, all alongside the work of people like Steve Baker and Ingo Ruhnke.''}}</ref> Games were commonly found in directories such as [[The Linux Game Tome]]<ref>{{cite web|url=https://www.linux.com/news/site-review-linux-game-tome/|title=Site review: Linux Game Tome|quote=''LGT sponsors annual awards where members of the site vote for the best free and non-free games of the year. A “miscellaneous” category also singles out the best sounds, emulators, toys, and the most promising Linux game project. The current top free game is Frozen Bubble, and the favorite commercial game is Quake 3 Arena.''|date=2004-12-16|first=Tina|last=Gasperson|website=[[Linux.com]]|access-date=2023-02-19}}</ref> and [[Freshmeat]]<ref>{{cite news |last=Bar |first=Joe |date=July 21, 2000 |title=Procrastinate with these Linux games |url=http://archives.cnn.com/2000/TECH/computing/12/20/linux.games.idg/index.html |publisher=[[CNN]] | quote=''Freshmeat was the focal point of my search. With over 300 games listed in the X11 section and 200 in the console section, it provided more games than I could possibly evaluate. Naturally, since I want instant gratification of my need for fun, I tended to look only at those with stable releases.'' |access-date=2023-02-19 |archive-url=https://web.archive.org/web/20091007122550/http://archives.cnn.com/2000/TECH/computing/07/21/linux.fun.games.idg/ |archive-date=October 7, 2009|url-status=dead}}</ref> and hosted on sites like [[SourceForge]]<ref>{{cite web|url=https://rapd.wordpress.com/2007/08/27/sourceforge-games-most-downloaded-projects/|first=Didip|last=Kerabat|title=Sourceforge: Games: Most downloaded projects…|website=RAPD|date=2007-08-27|access-date=2023-02-19}}</ref><ref>{{cite web|first=David|last=Bolton|url=https://learncgames.com/more-open-source-games-on-sourceforge-net/|title=More open source games on Sourceforge.net|website=Learn C Games Programming Blog|date=2020-07-11|access-date=2023-02-20}}</ref> and [[GNU Savannah]], but they were largely only ever brought together in the form of disorganized lists.<ref>{{cite web|last=Ahsan |first=Zohaib | date=2020-09-01|title=Top 10 Free and Open-Source Games to Play in 2020| url=https://www.fosslinux.com/43096/free-and-open-source-games-to-play.htm |website=FOSS Linux|access-date=2023-02-04}}</ref><ref>{{cite web |last=Saive |first=Anusha | date=2021-07-21 | title=The Best Open Source Games for Linux | url=https://www.fossmint.com/open-source-games-for-linux/ | website=FOSS Mint | access-date=2023-02-04}}</ref><ref>{{cite web |last=Zinoune |first=M. | title=19 Awesome Open Source Games for Linux | url=https://www.unixmen.com/gaming-on-linux1131-19-awesome-opensource-games-for-linux/ | website=Unixmen | access-date=2023-02-04}}</ref><ref>{{cite web | title=Top 10 Open Source Games 2022 | url=https://www.opensourcelisting.com/top-10-open-source-games/ | website=Open Source Listing| date=15 December 2021 | access-date=2023-02-04}}</ref> Other projects and games existed purely on isolated personal or project websites, often unknown and ignored.<ref>{{cite web |last=Anderton |first=Kevin | date=2021-02-23 | title=The Problem With Open-Source Game Development | url=https://www.forbes.com/sites/kevinanderton/2021/02/23/the-problem-with-open-source-game-development-infographic/?sh=7d5da2d96ecc | website=[[Forbes]] | access-date=2023-02-04}}</ref>

[[File:GNOME Mines 3.12.png|thumb|left|200px|''GNOME Mines'']]

The launch of the [[GNOME]] and [[KDE]] desktop projects in the late 1990s organized application and, to a certain extent, game development. Both attempts to create a more usable [[Linux desktop]] attracted volunteers to make utilities to that end. These programs included games, mostly recreations of small games like ''[[Minesweeper (video game)|Minesweeper]]'' or ''[[Microsoft Solitaire|Solitaire]]'' that come with Microsoft Windows, arcade classics and the like, games from combined sets such as ''[[Microsoft Entertainment Pack]]'', and occasionally original ideas.<ref>{{cite web|url=https://opensource.com/article/22/2/casual-gaming-linux-kde|title=My favorite casual games to play on Linux|first=Seth|last=Kenlon|website=[[Opensource.com]]|date=2022-02-26|access-date=2023-05-01|quote=''These aren't by any means the only two games from the KDE project. There are many others, including card games, tile games, and arcade games. The nice thing about the KDE Games package is that they contain games you're happy to walk away from at a moment's notice, and they only require about a fourth of your attention. I use these to kill time while compiling code. Sometimes I don't get a full game in, but I always appreciate the subtle shift in mental gears.''}}</ref>

The variety and number of these games, and other free games easily found in software repositories, have had GNOME or KDE-enabled Linux called a better option for [[Out of the box (feature)|out of the box]] [[casual game|casual gaming]] than Microsoft Windows.<ref>{{cite magazine|last=Mills|first=Ashton |date=2007-09-17|title=Open Source Challenge part 9: Gaming|url=http://apcmag.com/open_source_challenge_part_9_gaming.htm |magazine=[[APC (magazine)|APC]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100116050924/http://apcmag.com/open_source_challenge_part_9_gaming.htm |archive-date=2010-01-16|url-status=dead|quote=''Thanks to open source, there are actually quite a few fun and free games to download and for which the Ubuntu repositories have a fine selection. From the Applications > Add/Remove menu there's a whole range of games from the basic classics like Nethack and Frozen Bubble through to 3D accelerated gems like Chromium and Neverball. I played all of these. And then I played some more. And then some more. How do they make these so damn addictive? They're not blockbusters, but they beat the pants off the free games bundled in Windows, and will keep you occupied for many hours longer. Good deal for the price point.''}}</ref> They also provide games for other [[Unix-like]] operating systems, such as [[BSD]] and [[Oracle Solaris|Solaris]].<ref>{{cite web|url=http://www.onlamp.com/pub/a/bsd/2001/03/22/Big_Scary_Daemons.html|archive-url=https://web.archive.org/web/20180120071320/http://www.onlamp.com/pub/a/bsd/2001/03/22/Big_Scary_Daemons.html|archive-date=2018-01-20|first=Michael|last=Lucas|date=2001-03-22|website=ONLamp|title=FreeBSD Gaming|access-date=2023-07-09|quote=''If you're running KDE or Gnome, you already have a few simple games installed. I'm not a fan of either desktop -- both strike me as bloated and obtuse -- but their games packages are a nice way to pick up a dozen simple favorites such as Solitaire, Asteroids, and Tetris.''}}</ref><ref>{{cite web|url=http://toastytech.com/guis/sol93.html|title=Solaris 9 GNOME 2|website=Toasty Tech|access-date=2023-04-26|quote=''The desktop includes a number of games that typically come with GNOME.''}}</ref> Many such games are packaged into kdegames and the erstwhile GNOME Games package. Examples include ''[[Solitaire (game)|GNOME Aisleriot]]'', ''[[Tetris|GNOME Quadrapassel]]'', ''[[Tetravex|GNOME Tetravex]]'', ''[[Minesweeper (video game)|GNOME Mines]]'', ''[[Robots (1984 video game)|GNOME Robots]]'', ''[[Snake (video game genre)|GNOME Nibbles]]'', and ''[[Mr. Potato Head#In popular culture|KTuberling]]'',<ref>{{cite web|website=[[Linux Journal]]|title=Cooking with Linux - Learning...Disguised |url=https://www.linuxjournal.com/magazine/cooking-linux-learningdisguised|first=Marcel|last=Gagné|date=2008-05-01|access-date=2023-03-02}}</ref> ''[[Mahjong solitaire|KMahjongg]]'', ''[[Lode Runner|KGoldrunner]]'', ''[[Breakout (video game)|KBreakout]]'', ''[[Risk (board game)|KsirK]]'', plus the original game ''[[Konquest (video game)|Konquest]]''.<ref>{{cite web|url=https://www.linuxadictos.com/en/konquest-simple-videojuego-conquista-galaxias.html|title=Konquest: simple video game to conquer galaxies|website=Linux Addicts|date=9 May 2021 |access-date=2023-03-05}}</ref> Although designed primarily for application development, the underlying [[GTK]]<ref>{{cite web|url=https://keera.co.uk/posts/2013/03/19/creating-board-games-in-haskell/|title=Creating board games in Haskell in 100 lines of code|website=Keera Studios|date=2013-03-19|access-date=2023-12-20}}</ref> and [[Qt (software)|Qt]]<ref>{{cite book|url=https://books.google.com/books?id=kPBZDwAAQBAJ|title=Game Programming using Qt 5 Beginner's Guide|first=Pavel|last=Vladimirovich Strakhov|date=2018-04-30|publisher=Packt Publishing |isbn=978-1788390651}}</ref><ref>{{cite web|url=https://wiki.qt.io/Qt_Based_Games|title=Qt Based Games|website=[[Qt (software)|Qt Wiki]]|access-date=2023-12-20}}</ref> toolkits have also been used broadly for game development, as have [[wxWidgets]],<ref>{{cite web|url=https://brucey.net/programming/blitz/tutorials/prog/en/thetetrisgame.html|title=The tetris game in wxWidgets|date=2007|access-date=2023-12-20|first=Jan|last=Bodnar|website=The wxWidgets programming tutorial}}</ref> [[Tk (software)|Tk]],<ref>{{cite web|url=https://www.codingal.com/coding-for-kids/blog/create-a-color-game-in-python/|title=How to Create a Color Game in Python|website=Codingal|first=Amit|last=Dhanwani|date=2023-12-10|access-date=2023-12-20}}</ref> and [[FLTK]].<ref>{{cite web|url=https://www.fltk.org/links.php?LA+P149+Q|title=Listings in Wiki/Software/Games|website=[[FLTK|FLTK.org]]|access-date=2023-12-20}}</ref> The availability of [[list of game engines|free game engines]], such as [[Stratagus]], [[Pygame]],<ref>{{cite web|url=https://www.pygame.org/tags/all|title=Projects|website=[[Pygame]]|access-date=2023-12-09}}</ref> [[LÖVE (game framework)|LÖVE]],<ref>{{cite web|url=https://love2d.org/wiki/Category:Games|title=Category:Games|website=[[LÖVE (game framework)|LÖVE]]|access-date=2023-12-21}}</ref> and [[ioquake3]]<ref>{{cite web|url=https://ioquake3.org/extras/derivative-games/|title=New Games|website=[[ioquake3]]|date=30 August 2007 |access-date=2023-12-09}}</ref> have also helped unify free software development by making the engine projects themselves hubs of activity for games that make use of them.

[[File:Wesnoth-1.6-5.jpg|thumb|right|200px|''[[The Battle for Wesnoth]]'']]

The ''[[Battle for Wesnoth]]'' project was started in 2003 and quickly became popular to both players and editors. It also showcased some new ideas when it came to free game development.<ref>{{cite web|last=Carollo |first=David |date=2015-10-02|title=A look at Battle for Wesnoth's current game development strategy |url=https://opensource.com/life/15/10/interview-battle-for-wesnoth |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> Like ''Freeciv'' before it, it utilized the efforts of the gaming and [[free software community]] and their code, levels and artwork contributions but it also accepted storyline contributions and ideas for the game's entire [[fictional universe]]. The game's canon is maintained through review and discussion over which submitted [[campaign (role-playing games)|campaigns]] become official, thus setting up a model for community input and organized results.<ref>{{cite magazine|last1=Berg|first1=Alan |last2=Berg|first2=Nelson |date=2006-04-12|title=Battle for Wesnoth |url=http://www.freesoftwaremagazine.com/articles/wesnoth_interview_player |magazine=[[Free Software Magazine]]|issue=11|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100206210844/http://www.freesoftwaremagazine.com/articles/wesnoth_interview_player |archive-date=2010-02-06|url-status=dead}}</ref> This helped the game grow in scale and popularity to the point of being almost saga-like in scope. In addition, the project is worked on by many well-known free programmers, artists, designers and musicians such as the co-founder of the [[Open Source Initiative]] [[Eric S. Raymond]],<ref>{{cite web|title=People at Gna!: Eric S. Raymond Profile |url=https://gna.org/users/esr |website=[[Gna!]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100312014936/http://gna.org/users/esr |archive-date=2010-03-12}}</ref> and Linux kernel [[hacker culture|hacker]] [[Rusty Russell]].<ref>{{cite web|title=People at Gna!: Rusty Russell Profile |url=https://gna.org/users/rusty |website=[[Gna!]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20110517010616/https://gna.org/users/rusty |archive-date=2011-05-17}}</ref><ref>{{cite conference|last=Russell |first=Rusty |author-link=Rusty Russell|date=16 January 2007|title=Wesnoth for Kernel Hackers (and everyone else) |url=http://mirror.linux.org.au/linux.conf.au/2007/video/tuesday/tuesday_1450_gaming.ogg |conference=[[linux.conf.au|linux.conf.au 2007]] |location=Sydney |access-date=2022-07-20|archive-url=https://web.archive.org/web/20090326023922/http://mirror.linux.org.au/linux.conf.au/2007/video/tuesday/tuesday_1450_gaming.ogg |archive-date=2009-03-26}}</ref> ''[[Vega Strike]]'' has similarly allowed its community to expand the game and the surrounding lore while maintaining canon consistency.<ref>{{cite web|url=https://forums.vega-strike.org/viewtopic.php?f=11&t=5045|title=Please Only Put "Authoritative" Data into the Wiki|website=[[Vega Strike]]|author=JackS |date=2005-08-01 |access-date=2023-12-09|quote=If one wishes to contribute, or is dismayed at the absence of any piece or pieces of data, one should ask, query, inquire - that is to say, communicate - via appropriate channels. We have a wiki because we are engaged in a collaborative attempt at documenting and presenting data that has been generated concerning the VS universe, and because we, as a community, would like to think we're up to developing a culture where that is a pleasant venture.}}</ref> The ''Wesnoth'' developers also worked on ''[[Frogatto & Friends]]'', which features a free engine but mostly proprietary game data.

=== Hubs and development teams ===
[[File:Lincity-ng.png|thumb|left|200px|''[[Lincity-NG]]'']]

The general lack of unity and organization has created and continues to generate some controversy among the free software community, with problems of "[[reinventing the wheel]]" by making similar clones, games and multimedia resources being cited as a notable problem to free game development.<ref>{{cite web|last=Saring|first=Jonathan|date=3 April 2017|title=New data on open source: Reinventing the wheel every day|url=https://readwrite.com/2017/04/03/new-data-open-source-reinventing-wheel-every-day-dl1/|website=[[ReadWrite]]|access-date=2019-06-18}}</ref> This is especially taking up more notice as other problems are corrected, such as a lack of tools, libraries, artists and coders. A more central knowledge bank, texture library, and discussion area had been lacking.<ref>{{cite web|first=Han |last=Dao | title=Strategies for Expanding Free Gaming | date= 2007-07-14| url= http://libertygaming.blogspot.com/2007/07/strategies-for-expanding-free-gaming.html | website=Liberty Gaming |archive-url=https://web.archive.org/web/20151025130912/http://libertygaming.blogspot.com/2007/07/strategies-for-expanding-free-gaming.html | access-date=2023-02-04|archive-date=25 October 2015 }}</ref>

Traditionally free software video games were developed as individual projects, some small scale and others larger scale.<ref name="Gleason" /> Programmers and other developers did often work on other projects, but the whole system was very unlinked.<ref>{{cite web| title=Mission statement or 'Free games development - you're doing it wrong!' | date= 2009-01-19| url=http://tryglaw.eu/m64blog/?p=8 | website=M64's Games Blog | archive-url= https://web.archive.org/web/20090212205136/http://tryglaw.eu/m64blog/?p=8| access-date=2023-02-04| archive-date= 12 February 2009}}</ref> More recently free software development teams have started appearing, groups that function like [[software companies]] and create multiple pieces of work. Examples include the developer [[Stephen J. Sweeney|Parallel Realities]], which have released the games ''Project: Starfighter'', ''[[The Legend of Edgar]]'', ''[[Blob Wars: Metal Blob Solid]]'', as well as its sequel, ''[[Blob Wars: Blob and Conquer]]''.<ref>{{cite magazine|last=Reed|first=Michael |date=June 10, 2010 |title=Parallel Realities: Retro-themed Linux games|url=http://www.linuxjournal.com/content/parallel-realities-retro-themed-linux-games |magazine=[[Linux Journal]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20100614064454/http://www.linuxjournal.com/content/parallel-realities-retro-themed-linux-games |archive-date=2010-06-14}}</ref>

[[File:Tux_typing_2_screen_shot_1.png|thumb|right|''[[Tux Typing]]'']]

The Linux Game Tome "Game of the Month" team was an open group of game developers that revamp old free software games. Some examples include the transformation of ''TuxKart'' into the more modern ''SuperTuxKart'', work on ''Pingus'' and ''SuperTux'', and ''Lincity-NG'', an updated version of ''Lincity'' with superior graphics.<ref>{{cite web |title=Highly Addictive Puzzle/Arcade Games for Linux |url=https://www.junauza.com/2008/05/highly-addictive-puzzlearcade-games-for.html |quote=''Work on [Pingus] began in 1998. This game is the first Game of the Month by The Linux Game Tome, which has revamped such games as SuperTux, Super TuxKart, and Lincity. The first post-GotM version 0.6 was released in 2003 for Linux featuring new levels and a level editor.''|date=2008-05-02 |website=TechSource |access-date=2023-02-04}}</ref> A more recent project with similar goals exists called LibreGames, which has worked on ''[[Jump 'n Bump]]'', ''[[OpenAlchemist]]'' and ''[[FreeTumble]]'' and ''[[JAG (video game)|JAG]]''.<ref>{{cite web |last=Wilson |first=Hamish | date=2023-01-16 | title=Building a Retro Linux Gaming Computer - Part 21: Fluffy Bunnies | url=https://www.gamingonlinux.com/2023/01/building-a-retro-linux-gaming-computer-part-21-fluffy-bunnies/ | website=GamingOnLinux | access-date=2023-02-02}}</ref> Identical Software has also worked to modernize various libre games, including ''[[Ostrich Riders]]'', ''[[Shippy 1984]]'', ''[[OpenAlchemist]]'', ''[[Mojotron]]'', ''[[Seahorse Adventures]]'', ''[[Thurst (video game)|Thrust]]'', and ''[[Mari0]]''.<ref>{{cite web|url=https://media.libreplanet.org/u/libreplanet/m/free-software-game-restoration/|website=[[LibrePlanet]]|title=Free Software Game Restoration|first=Dennis|last=Payne|access-date=2023-12-08}}</ref><ref>{{cite web|url=https://media.libreplanet.org/u/libreplanet/m/free-software-game-restoration-ii/|website=[[LibrePlanet]]|title=Free Software Game Restoration II|date=2022-03-19|first=Dennis|last=Payne|access-date=2023-12-08}}</ref>

[[File:OpenHV Anti Freeze.png|thumb|left|OpenHV combines the [[Creative Commons license|CC licensed]] ''Hard Vacuum'' assets with the [[OpenRA]] engine.<ref>{{cite web |last=Dawe|first=Liam |date=15 September 2020|title=A cancelled old RTS named 'Hard Vacuum' gets revived with OpenRA |url=https://www.gamingonlinux.com/2020/09/a-cancelled-old-rts-named-hard-vacuum-gets-revived-with-openra |website=GamingOnLinux|access-date=20 July 2022}}</ref>]]

[[PlayPower]] is a non-profit organization founded in 2008 designed to create free educational computer software for low income families in [[India]] and other developing countries. The Tux4Kids initiative also maintains various educational games featuring the child-friendly Tux character such as ''[[Tux Paint]]'', ''[[Tux, of Math Command]]'', ''[[Tux Typing]]'' and related efforts.<ref>{{cite magazine|last=Diehl|first=Mike |date=2009-10-21|title=Teaching with Tux |url=http://www.linuxjournal.com/content/teaching-tux |magazine=[[Linux Journal]]|access-date=2022-07-20|archive-url=https://web.archive.org/web/20160303215341/http://www.linuxjournal.com/content/teaching-tux |archive-date=2016-03-03}}</ref> The [[GCompris]] suite is also available from [[KDE]],<ref>{{cite magazine|last=Diehl|first=Mike |date=2009-11-10|title= Learning with Gcompris |url=https://www.linuxjournal.com/content/learning-gcompris |magazine=[[Linux Journal]]|access-date=2023-02-10}}</ref> and the activity centre ''[[Childsplay (software)|Childsplay]]'' is also available.<ref>{{cite magazine|last=Diehl|first=Mike |date=2009-12-30|title= Learning is Childsplay
 |url=https://www.linuxjournal.com/content/learning-childsplay |magazine=[[Linux Journal]]|access-date=2023-02-12}}</ref>

In recent years, content repositories such as [[OpenGameArt.org]], [[Wikimedia Commons]], [[Openclipart]], and [[The Freesound Project]] have enabled developers to easily find appropriately-licensed content rather than relying on [[programmer art]].<ref>{{cite web|last=Rodriguez|first=Juan|date=2012-04-27|title=The Liberated Pixel Cup: proving the potential for free culture and free software game development|url=https://opensource.com/life/12/4/liberated-pixel-cup-proving-potential-free-culture-and-free-software-game-development |website=[[Opensource.com]]|access-date=2023-02-04}}</ref><ref>{{cite web |last=Hancock |first=Terry | date=2009-09-16 | title=Free-licensed art for free software games: OpenGameArt.org | url=http://www.freesoftwaremagazine.com/articles/free_licensed_art_free_software_games_opengameart_org|archive-url=https://web.archive.org/web/20140715004924/http://www.freesoftwaremagazine.com/articles/free_licensed_art_free_software_games_opengameart_org| website=[[Free Software Magazine]] | archive-date=2014-07-15| access-date=2023-02-10}}</ref> Such content is often under [[Creative Commons license]]s or those in the GNU GPL family,<ref>{{cite web|url=https://eis-blog.soe.ucsc.edu/2009/10/landscape-of-open-source-games/|title=Landscape of open source games|first=Jim|last=Whitehead|date=2009-10-29|access-date=2023-09-17|website=Expressive Intelligence Studio Blog|quote=''A disappointment was the state of open content sharing. While some sites, like OpenGameArt and New Grounds provide tagging with a Creative Commons license, far more common are sites like Google’s 3D Warehouse that have site-specific terms of use, and provide no ability for artists to indicate they are willing to share their work via Creative Commons or an open source license.''}}</ref>  easily facilitating use by most free software projects.<ref>{{cite web|last=Davis|first=Hunter|date=2015-01-15|title=Remixing open source games with Creative Commons content|url=https://opensource.com/life/15/1/remixing-open-source-games-creative-commons-content|website=[[Opensource.com]]|access-date=2023-02-04}}</ref><ref>{{cite web|last=Harmon |first=Elliot |date=2014-07-24|title=Download Nick Liow's Open Game Art Bundle |url=https://opensource.com/life/13/7/download-open-game-art-bundle |website=[[Opensource.com]] |access-date=2023-02-05}}</ref> OpenGameArt.org is also affiliated with related websites such as Libregamewiki,<ref name="Bolding" /> a database of purely libre games, the Free Gamer blog<ref>{{cite web|last=Sogge Heggen|first=Erlend|date=2011-02-08|title=Open source games: It's a team effort|url=https://opensource.com/life/11/2/open-source-games-it%E2%80%99s-team-effort|website=[[Opensource.com]]|access-date=2023-02-04}}</ref> and the FreeGameDev forums.<ref>{{cite web|last=Behrenshausen|first=Bryan|date=2014-07-21|title=What is open gaming?|url=https://opensource.com/resources/what-open-gaming|website=[[Opensource.com]]|access-date=2023-02-04}}</ref><ref>{{cite web|last=Banks|first=Hunter|date=2015-11-11|title=The State of Open Source Gaming on Linux|url=https://fossforce.com/2015/11/the-state-of-open-source-gaming-on-linux/|website=FOSS Force|access-date=2023-01-29}}</ref><ref>{{cite web|last=Hasan|first=Mehedi|date=2022-07-13|title=The 20 Best Linux Gaming Websites That Every Gamer Must Know|url=https://www.ubuntupit.com/best-linux-gaming-websites-that-every-gamer-must-know/|website=Ubuntu Pit|access-date=2023-02-02}}</ref>

[[GitHub]], [[GitLab]] and [[Gitea]] now hosts a significant number of free and open-source games.<ref>{{cite web |last=Reilly |first=Lee |date=25 August 2021|title=30 free and open source Linux games – part 1 |url=https://github.blog/2021-08-25-30-free-and-open-source-linux-games-part-1/ |website=The GitHub Blog|access-date=20 July 2022}}</ref><ref>{{cite web |last=Reilly |first=Lee |date=26 August 2021|title=30 free and open source Linux games – part 2 |url=https://github.blog/2021-08-26-30-free-and-open-source-linux-games-part-2/ |website=The GitHub Blog |access-date=20 July 2022}}</ref><ref>{{cite web |last=Reilly |first=Lee |date=27 August 2021|title=30 free and open source Linux games – part 3 |url=https://github.blog/2021-08-27-30-free-and-open-source-linux-games-part-3/ |website=The GitHub Blog |access-date=20 July 2022}}</ref> 
The [[itch.io]] service is also a host for many open source games, and also features an open source client.<ref>{{cite web |last= Dawe |first=Liam | date=2015-12-15 | title=The Itch store now has an open source and multiplatform store application | url=https://www.gamingonlinux.com/2015/12/the-itch-store-now-has-an-open-source-and-multiplatform-store-application/ | website=GamingOnLinux | access-date= 2023-01-29}}</ref> The same is true for competitor [[Game Jolt]],<ref>{{cite web |last=Kerr |first=Chris | date=2016-01-13 | title=Indie marketplace Game Jolt releases open source desktop client | url=https://www.gamedeveloper.com/console/indie-marketplace-game-jolt-releases-open-source-desktop-client | website=Game Developer | access-date= 2023-02-03}}</ref> and was also the case for former distributor [[Desura]].<ref>{{cite web|title=Desura Game Client Is Now Open-Source|url=https://www.phoronix.com/news/MTA0NjI|website=[[Phoronix]]|first=Michael|last=Larabel|date=|access-date=2023-02-05}}</ref> A number of open source games have even been made available on [[Steam (service)|Steam]].<ref>{{cite web |last=Dawe|first=Liam |date=2 May 2018|title=The open source fantasy turn-based strategy game 'Battle for Wesnoth' is now on Steam |url=https://www.gamingonlinux.com/2018/05/the-open-source-fantasy-turn-based-strategy-game-battle-for-wesnoth-is-now-on-steam/ |website=GamingOnLinux|access-date=2023-02-03}}</ref><ref>{{cite web |last=Dawe|first=Liam |date=13 January 2022|title=SuperTux released free on Steam, an open source classic |url=https://www.gamingonlinux.com/2022/01/supertux-released-free-on-steam-an-open-source-classic/ |website=GamingOnLinux|access-date=2023-02-03}}</ref><ref>{{cite web |last=Dawe|first=Liam |date=29 March 2016|title=Wyrmsun, the retro-themed & open source RTS is now free on Steam |url=https://www.gamingonlinux.com/2016/03/wyrmsun-the-retro-themed-open-source-rts-is-now-free-on-steam |website=GamingOnLinux|access-date=2023-02-03}}</ref> Many free software games are also available from [[Flathub]] and [[Snap (software)|Snap]].

==See also==
{{Portal|Free and open-source software|Video games}}
* [[List of open-source video games]]
* [[List of commercial video games with available source code]]
* [[List of freeware video games]]

==References==
{{Reflist|30em}}

== External links ==
* {{usurped|1=[https://web.archive.org/web/20150527150705/http://sourceforge.net/p/forge/community-docs/SourceForge%20Games/ SourceForge Games]}} List of games hosted by [[SourceForge]] (archived on 27 May 2015)
* {{usurped|1=[https://web.archive.org/web/20111010003911/http://www.talula.demon.co.uk/games.html Playing the Open Source Game]}}, a 1999 article by Shawn Hargreaves (archived on 10 October 2011)
* [https://libregamewiki.org/ LibreGameWiki]
* [https://trilarion.github.io/opensourcegames/ Open source games list] on [https://github.com/Trilarion/opensourcegames GitHub]
* [http://osgameclones.com/ Open source game clones] list
* [https://directory.fsf.org/wiki/Category/Game Game category of the Free software directory]

{{Independent production}}
{{No cost computer games}}
{{FLOSS}}

[[Category:Open-source video games|*]]
[[Category:Video game development]]