List of commercial video games with available source code
The video games in this table were originally developed proprietary as commercial closed source software product. On the end of life of these video games when no revenue was expected anymore (e.g. superseded by next generation or beyond support life cycle), the source code was released or became available by other means. Instead of letting these games become unsupported Abandonware, they were opened under varying (free and non-free, commercial and non-commercial) licenses to the game communities or the public. This allows the game communities at least to provide technical support (bug fixes, compatibility adaptations to new hardware and OSs) themselves, e.g. with unofficial patches or Source ports to actual platforms. Artwork and data are seldom released under a free license as the copyright entanglements are often more complicated than with the source code. See also Category:Commercial video games with freely available source code
For Open source video game see the List of open source video games. For commercial games which were released as freeware without source code see List of commercial video games released as freeware.
|Title||First release||Source code release||Genre||Engine license||Content license||Original developer||Additional information|
|Abuse||1995||2003||Run and gun||Public domain||Public domain and Proprietary*||Crack dot Com||Game source code was released as public domain along with the shareware-released media files. *Only shareware data, excluding the sound effects, is in the public domain; the rest is proprietary.|
|Aliens versus Predator||2000||2001||FPS||Own non-commercial license||Proprietary||Rebellion Developments||Source code released by Rebellion Developments 2001.|
|Allegiance (now FreeAllegiance)||2000||2004||real-time strategy and Space combat simulator||Shared Source||Proprietary||Microsoft Research||Released by Microsoft Research under a shared source license ("MSR-SSLA") 2004.|
|Anacreon: Reconstruction 4021||1987||2004||4x game||no license given||Freeware||George Moromisato||Developed by George Moromisato in 1987. Around 2004 the source code of the DOS version 2.00 was released.|
|Ares (video game)||1996||2008||Space Strategy video game||LGPLv3||CC BY-NC-SA Freeware||Nathan Lamont/Bigger Planet Software|
|Arx Fatalis (now Arx Libertatis)||2002||2011||RPG||GPL||Proprietary||Arkane Studios||The design of Arx Fatalis was heavily influenced by Ultima Underworld. Game source released by Arkane Studios on January 14, 2011.|
|Asteroids||1979||1996||Arcade||no license||no license||Atari||Source code of Asteroids in the Atari 7800 version was released in physical form by Atari Sunnyvale on their closure 1996. Together with Ms. Pac Man, Dig Dug, Robotron: 2084 and eight further games reconstructed by the Atari-Museum and published later.|
|AstroMenace (now OpenAstroMenace)||2007||2007||Arcade||GPLv3||GPLv3||Viewizard||Based on AstroMenace which was released in February 2007 as shareware for Windows and freeware for Linux.|
|Aquaria||2010||2010||Action-adventure||GPL||Proprietary||Bit Blot||Open sourced with Humble Indie Bundle.|
|Aztaka||2009||2011||Action role-playing game||Proprietary||Citérémis||In 2011 Independent game developer Citérémis released a "Developer's Edition" of Aztaka for 9.99$ which included also the source code of the game.|
|Savage: The Battle for Newerth||2003||2007||online Real-time strategy, First-person shooter||no license/proprietary||Freeware||S2 Games||The game was turned freeware by S2 Games on September 1, 2006. In 2007 the source code became available to the game community, who now continues development.|
|Beyond Castle Wolfenstein||1985||2005||Shooter||no license given||Freeware||Silas Warner||The reconstructed source code and the ported game was released by Silas Warner's widow in 2005.|
|Beyond the Titanic||1986||2009||Text adventure||GPL||GPL||Apogee Software||Game source released on March 20, 2009.|
|Blades of Exile||1997||2007||RPG||GPL||GPL||Spiderweb Software||Source code and artwork was released by Jeff Vogel (Spiderweb Software) under a GPL license in June 2007.|
|Blake Stone: Planet Strike||1994||2013||FPS||GPL||GPL||Apogee Software||Released in 2013 to promote the sale of the Apogee Throwback Pack on Steam.|
|Buzz Aldrin's Race Into Space (now Race Into Space)||2007||2013||Simulation||GPLv2||Freeware||Strategic Visions/Fritz Bronner||A port of Buzz Aldrin's Race Into Space to modern operating systems. The license fell back to Bronner as he had a contract clause with Interplay stating that in case Interplay went bankrupt or no distribution for some time.|
|Catacomb||1989||2014||Top-down shooter||GNU General Public License||Proprietary||Softdisk||Early game by John D. Carmack.|
|Catacomb 3D||1991||2014||First-person shooter||GNU General Public License||Proprietary||id Software||Predecessor to Wolfenstein 3D.|
|Call to Power II||2000||2003||turn-based strategy game||Non-commercial own license||Proprietary||Activision||Civilization clone. Source opened to the apolyton community to allow support with Community patches.|
|Canabalt||2009||2010||Cinematic platformer||Engine MIT license, game code own proprietary license||Proprietary/Freeware||Adam Saltsman||Released by Adam Saltsman in 2010.|
|Clonk||1994||2010||Action, RTS, Platform||ISC||CC-BY||RedWolf Design||Successor of the Clonk shareware series.|
|Colobot||2001||2012||Educational game, RTS||GPLv3||GPLv3||Epsitec SA||Game source released on March 26, 2012.|
|Colossal Cave Adventure||1976||2007||Text Adventure||no license given||no artwork||Will Crowther|
|Conquest: Frontier Wars||2001||2013||Space Real-time strategy||Proprietary||Fever Pitch Studios||On December 9, 2013, the source code was bundled with every copy of the game purchased on GOG.com.|
|CoreBreach||2011||2012||Racing game||GPL (game)/ MIT (3d engine)||Freeware (demo)/ proprietary||CoreCode||Futuristic "anti-gravity" racing game with combat. Source was released after a sales quota was met.|
|Dark Reign 2||2000||2011||RTS||LGPL||Proprietary||Pandemic Studios||Released by a former developer of Pandemic Studios to prevent that the game become unsupported Abandonware. Legal status unclear.|
|DarkSpace||2001||2009||MMO, Real-time strategy||multiple, own licenses.||Proprietary||Palestar||DarkSpace's Engine called Medusa released by Palestar under multiple licenses.|
|Descent (now D2X-XL)||1995||1997/1999||space 3D first-person shooter||own license||Proprietary||Parallax Software||Game source released by Parallax Software on 1997 (Descent 1) and 1999 (Descent 2).|
|Dink Smallwood||1997||2003/2008||Action RPG||Zlib inspired own license||Zlib/Proprietary (Sound)||Robinson Technologies||Source published on July 17, 2003 from Seth Robinson. 2008 Artwork published (without some sounds) under a Zlib license.|
|Doom||1993||1997/1999||FPS||GPL||Proprietary||Id Software||Game source released on 1997, placed under GPL on 1999.|
|Doom II: Hell on Earth||1994||1997/1999||FPS||GPL||Proprietary||Id Software||Game source released on 1997, placed under GPL on 1999.|
|Doom 3||2004||2011||FPS||GPL||Proprietary||Id Software||Game source released on November 22, 2011.|
|Dragonfire||1982||2003||action||without license||without license||Imagic||Source code of this Imagic Atari 2600 game was released by developer Bob Smith on May 24, 2003.|
|Duke Nukem 3D||1996||2003||FPS||GPL||Proprietary||3D Realms||Game source released on April 1, 2003.|
|Eat The Whistle||1998||2002||Sports game||GPLv2||GPLv2||Hurricane Studios||A football Simulation video game released for the Amiga. In 2002 released under the GPL and ported to many other platforms.|
|Enemy Engaged: RAH-66 Comanche vs. KA-52 Hokum||2000||2003||Helicopter Flight simulator||own license||Proprietary||Razorworks||Game source was released somewhen 2003 by Razorworks.|
|Enemy Nations||1997||2005/2006||RTS||own non-commercial license||non-commercial Freeware||Windward Studios||Game source and artwork was released by Windward Studios under a non-commercial license around 2005/2006.|
|Falcon 4.0||1998||2000||Combat flight simulator||Proprietary (leaked code) / questionable BSD license (FreeFalcon community development branch)||Proprietary||MicroProse||A 2000 source code leak by a former developer allowed unofficial community development, including upgrades, improved graphics, and bug fixes. In 2013 the source code of one of the community development branches was released to a GitHub repository under a BSD license. As Atari currently owns the intellectual property and Graphsim has the exclusive right to publish, the legality of this source code is highly questionable.|
|Fish Fillets (now Fish Fillets NG)||1998||2002||Puzzle||GPL||GPL||Altar Games||Released commercially as Fish Fillets in 1998. Source released in 2002 under the GPL.|
|FreeSpace 2 (now FreeSpace 2 Source Code Project)||1999||2002||Space Sim||Non-commercial/Proprietary||Proprietary||Volition, Inc.||Game source released by Volition, Inc. on April 25, 2002.|
|Gish||2010||2010||Action||GPL||Proprietary||Cryptic Sea||Source opened with Humble Indie Bundle by Wolfire Games.|
|Glitch||2009||2013||MMO||client and other parts under CC0||CC0||Tinyspeck||In 2013, one year after the MMO was shut down, most of the artwork and parts of the code were released under a CC0 license.|
|Gothic 3||2006||2007||RPG||Proprietary||Proprietary||JoWood||Source code was opened by JoWood for the members of "Community patch project" from the game community in 2007.|
|Gravity Force 2||1994||2008||Multidirectional shooter||no license given||no license given||Jens Andersson & Jan Kronqvist||On September 21, 2008 the developers of the Amiga shareware title Gravity Force 2 released the source code for "nostalgic interest" without specified license.|
|H-Craft Championship||2007||2015||science fiction racing game||zlib license||Freeware||Irrgheist||H-Craft Championship was developed by the independent game studio Irrgheist and released by Manifesto Games/Akella in 2007. In 2014, the developers released the game as freeware and the source code under the zlib license in February 2015.|
|Heretic||1994||1999/2008||FPS||GPLv2||Proprietary||Raven Software||Game source released on 1999, put under GPL on September 4, 2008.|
|Hexen||1996||1999/2008||FPS||GPLv2||Proprietary||Raven Software||Game source released on 1999, put under GPL on September 4, 2008.|
|Hexen II||1997||2000||FPS||GPL||Proprietary||Raven Software||Game source released in 2000.|
|Homeworld||1999||2003||Space Real-time strategy||Non-commercial license||Proprietary||Relic Entertainment||Game source released 2003.|
|HoverRace||1996||2008||Racing||originally time limited license / later non-commercial GrokkSoft HoverRace SourceCode License.||GrokkSoft||Was first published under a time-limited license. On 2008 re-newed with an infinite duration license.|
|Hovertank 3D||1991||2014||First-person shooter||GNU General Public License||Proprietary||id Software||First 3D game by id Software and John D. Carmack.|
|Iron Seed||1994||2013||Space trading and combat simulator||GPL||Proprietary||Channel 7||Released as freeware by the authors to promote the development of Iron Seed 2 in the 2000s. Source opened under the GPL by the developers in 2013.|
|Jagged Alliance 2 Wildfire (now JA2-Stracciatella)||2004||2004||Tactical role-playing game||Own license||Proprietary||iDeal Games||Source code was bundled and released with JA2: Wildfire 2004.|
|Kiloblaster||1992||2008||Arcade||Own license||Freeware (with additional restriction)||Epic MegaGames||Allen Pilgrim declared the registered version freeware and released also the source code on August 4, 2008.|
|Kumquat & Cantaloupe||1996||2012||Maze||undefined||Freeware||Dave Schofield||The Amiga games Kumquat & Cantaloupe, originally released as shareware titles, were re-released as freeware with source code included by the author in November 2012.|
|Kroz||1987||2009||Maze||GPL||GPL||Apogee Software||Game source released on March 20, 2009.|
|Lugaru||2005||2010||Action-adventure game||GPLv2||Proprietary||Wolfire Games||Open sourced with the first Humble Indie Bundle by Wolfire Games.|
|Maelstrom||1992||1995/2010||Shoot 'em up||GPL||CC-BY||Ambrosia Software||Asteroids clone. 1995 source released under GPL. In 2010 Andrew Welch and Ian Gilman released the game's contents under a Creative Commons license.|
|Marathon 2: Durandal (now Aleph One)||1995||2000||FPS||GPL||Proprietary||Bungie Software||Released by Bungie on January 17, 2000.|
|MechCommander 2||2001||2006||Real-time tactics||Shared Source Limited Permissive License||Proprietary||Microsoft||Source opened under a Shared Source license by Microsoft in August 2006.|
|Meridian 59||1995||2012||MMORPG||GPLv2 (compression library and audio library not included)||Freeware||Archetype Interactive||As of February 2010 Meridian 59 has been turned over to the original technical developers, Andrew and Chris Kirmse. On September 15, 2012 they released the game to the public as Freeware and most of the source code under the GPLv2 license.|
|Miner Wars 2081||2012||2013||Space Shooter||own proprietary license||Proprietary||Keen Software House||6DOF action-survival space-shooter simulation-game set in the year 2081. Full game and engine source code released under a restrictive license.|
|Monster RPG 2||2010||2012||JRPG||zlib||zlib||Nooskewl||After a successful Indiegogo campaign, released by Nooskewl under a Public Domain-like license on November 11, 2012, later changed to zlib|
|MiG Alley||1999||2001||Flight simulation||own license||Proprietary||Rowan Software/Empire Interactive||Source opened by Rowan Software/Empire Interactive in 2001.|
|Myth (series)||1998||2001||Real-time tactics||source opened without defined license||Proprietary||Take 2 Interactive/MumboJumbo||Source opened by Take 2 Interactive/MumboJumbo to the game community in 2001.|
|Myst Online: Uru Live||2007||2010||MMORPG||GPLv3||Proprietary||Cyan Worlds||"Myst Online: Uru Live" struggled to attract subscribers and was canceled after its first year. Cyan release the game as an open source game in 2010.|
|Natural Selection||2002||2014||FPS||GPLv2 (most code) / custom (external libraries)||Proprietary||Unknown Worlds Entertainment||In January 2014 Unknown Worlds released the source code for download on GitHub.|
|NoGravity||1996||2005||Arcade||GPL||Proprietary||realtech VR||Source code released by realtech VR on February 16, 2005.|
|No One Lives Forever 2: A Spy in H.A.R.M.'s Way||2002||2011||FPS||GPLv2||Proprietary||Monolith Productions||Source code released by Monolith Productions/Sierra Entertainment as part of a modding toolkit|
|Penumbra: Overture||2007||2009||Survival horror with FPS aspects||GPL||Proprietary||Frictional Games||Developed by Swedish developer Frictional Games, the game blends the genres of survival horror, first-person shooter, and adventure. Open sourced with Humble Indie Bundle.|
|Prince of Persia||1989||2012||Cinematic platformer||Proprietary||Proprietary||Jordan Mechner||Apple II source code was long-thought-lost, but was found again and released in 2012.|
|Project: Starfighter||2001||2008||Shoot 'em up||GPL||Proprietary||Parallel Realities|
|Quake||1996||1999||FPS||GPL||Proprietary||Id software||Game source released on 1999.|
|Quake II||1997||2001||FPS||GPL||Proprietary||Id software||Game source released on December 21, 2001.|
|Quake III Arena||1999||2005||FPS||GPL||Proprietary||Id software||Game source released on August 19, 2005.|
|Return to Castle Wolfenstein||2001||2010||FPS||GPL||Proprietary||Id software||The source code for Return to Castle Wolfenstein and Enemy Territory was released under the GNU General Public License (GPL) on August 12, 2010.|
|Revenge of the Titans||2010||2011||Tower Defense, RTS||Custom all-permissive||Proprietary||Puppy Games||Java based game. Source code was released by Puppy Games with the success of the second Humble Indie Bundle.|
|Rise of the Triad||1995||2002||FPS||GPL||Proprietary||Apogee Software/3D Realms||Game source released on December 20, 2002.|
|Rowan's Battle of Britain||2000||2001||Flight simulation||own license||Proprietary||Rowan Software/Empire Interactive||Source opened by Rowan Software/Empire Interactive in 2001.|
|Shadowgrounds||2005||2011||Shoot 'em up||own non-commercial license||Proprietary||Frozenbyte||Game source released with a Humble Indie Bundle by Frozenbyte on April 22, 2011.|
|Shadow Warrior||1997||2005||FPS||GPL||Proprietary||3D Realms||Game source released on April 1, 2005.|
|Seven Kingdoms||1996||2008||RTS||GPL||GPL and Proprietary*||Enlight||Source code released by Enlight in November, 2008. *Music is proprietary|
|Seven Kingdoms II||1999||2009||RTS||GPL||Proprietary||Enlight||Source code released in August, 2009.|
|Siege of Avalon||2000||2003||RPG||LGPL||Proprietary||Digital Tome||Source code released June 23, 2003.|
|Space Engineers||2013||2015||space sandbox game||proprietary||commercial||Keen Software House||On May 14, 2015 the development studio made the source code freely available to the game's community for easier modding on GitHub under a proprietary license (non-open source license).|
|SimCity (Micropolis)||1989 (as SimCity)||2008 (as Micropolis)||City-building game||GPLv3||GPLv3||Maxis (Will Wright/Don Hopkins)||Source code released by Don Hopkins under GPL in 2008. For trademark reasons released under the original working title Micropolis, also known as OLPC SimCity.|
|Spear of Destiny||1992||1995||FPS||ID SOFTWARE LICENSE||Proprietary||id Software||The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995.|
|Star Control II (now The Ur-Quan Masters)||1992||2002||Action RPG||GPL||Cc-by-nc-sa||Toys for Bob (Fred Ford / Paul Reiche III)||Source code of the 3DO version GPL-released in 2002.|
|Star Wars Jedi Knight II: Jedi Outcast||2002||2013||First/Third person shooter||GPLv2||Proprietary||Raven Software||Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.|
|Star Wars Jedi Knight: Jedi Academy||2003||2013||First/Third person shooter||GPLv2||Proprietary||Raven Software||Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.|
|Starshatter: The Gathering Storm||2004||2011||Space combat simulator||New BSD License||Freeware||Destroyer Studios/Matrix Games||Source code released by Destroyer Studios/Matrix Games on December 14, 2011.|
|Strange Adventures in Infinite Space||2002||2005/2009||Space Roguelike||GPL||Freeware||Digital Eel||Source was release under GPL by Digital Eel in 2005. Content became freeware 2009.|
|Stellar Frontier||1997||2008||Space simulation||STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license)||STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license)||Stardock||Stellar Frontier was developed by Doug Hendrix in 1995 and was later licensed and published by Stardock. On August 4, 2006, Stardock Systems closed the official master server. On November 18, 2008, the game source code was released under an own non-commercial license.|
|Supernova||1987||2009||Text adventure||GPL||GPL||Apogee Software||Game source released on March 20, 2009.|
|Sopwith||1984||2000||Shoot 'em up||GPL||GPL||David L. Clark||The C and x86 assembly source code to Sopwith was released in 2000, at first under a non-commercial use license, but later under the GNU GPL at the request of fans.|
|To Heart 2||2004||2006||Visual novel||GPL||Proprietary||Aquaplus||Its source code was released by Aquaplus under the GNU General Public License on December 22, 2005 along with the source code for Arurū to Asobo!!, Tears to Tiara, and Kusari. This decision was made due to the inclusion of Xvid derived code; Xvid being distributed under the same license. The source code for all four games is distributed upon request in CD-R format.|
|Tribes 2||2001||2012||FPS||Torque engine under MIT, rest is proprietary||Freeware||Dynamix||Many commercial titles were developed using the Torque engine. GarageGames released Torque 3D under the MIT License on September 20, 2012. The Tribes 2 source code beside the Torque engine is not available.|
|Tyrian (now OpenTyrian)||1995||2007||Scrolling shooter||GPLv2||Freeware/CC-BY 3.0 US||World Tree Games Productions/Epic MegaGames (Jason Emery/Daniel Cook)||The OpenTyrian team ported the closed-source Pascal code of Tyrian to C with permission of Jason Emery on February 2007. The graphic artist Daniel Cook released the artwork shortly after.|
|Unreal||1998||2008||FPS||source opened without defined license||Proprietary||Epic Megagames||Access to source-code granted by Epic Megagames for the game community around 2008.|
|Uplink||2001||2003||Hacking simulation||Proprietary||Proprietary||Introversion Software||Mid-2003 Introversion Software started selling the source code for $45. Usage beside modding and fixing of the game are not permitted by the license. Source code of the games Darwinia + Multiwinia and DEFCON was later sold too.|
|Warlords Battlecry III||2004||2006||RTS||Own proprietary license||Proprietary||Infinite Interactive/Enlight Software||On 24 May 2006, the Warlords Battlecry III source code became available to the public. Members of the community (who signed a NDA) have been entitled distributors, which have the legal permissions to allocate copies of the Warlords Battlecry III source code. The source code release resulted in the development of several community-made fan patches and mods.|
|Warzone 2100||1999||2004/2008||RTS||GPLv2||GPLv2, CC||Pumpkin Studios/Eidos Interactive||3D real-time strategy game with a unit design system. First source part was released by Pumpkin Studios/Eidos Interactive in 2004 and the rest was released in 2008.|
|Wolfenstein 3D||1992||1995||FPS||ID SOFTWARE LICENSE||Proprietary||id Software||The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995.|
|Wolfenstein: Enemy Territory||2003||2010||FPS||GPLv3||Proprietary||Splash Damage/id Software||Game source released on August 12, 2010.|
|Word Whiz||1988||2009||Educational game||GPL||GPL||Apogee Software||Game source released on March 20, 2009.|
|Xargon||1993||2008||Platformer||own license||Freeware (with additional restrictions)||Epic MegaGames||Game source released in 2008 by the programmer Allen Pilgrim.|
|Title||Original release||Source code found or leaked||Genre||Original developer||Additional information|
|Art of Fighting||1992||2014||Run and gun||Found in a PC9821 (neogeo dev machine) the full source code of the Art of Fighting ASM 68k source code in 2014.|
|B.O.B.||1993||2008||Side-scrolling game||On September 12, 2008 the source code of the SNES version became available as it was found on an eBay-bought hard drive.|
|Dark Engine (Thief, Thief II)||1993||2008||Stealth game||Looking Glass Studios||In 2009, a complete copy of the Dark Engine source code was discovered in the possession of an ex-Looking Glass Studios employee who was at the time continuing his work for Eidos Interactive. In late April 2010, a user on the Dreamcast Talk forum disassembled the contents of a Dreamcast development kit he had purchased. Later, significant updates for the Dark Engine based games were published.|
When much time and manual work is invested in decompiling, disassembling and reverse engineering the binary program, it is possible to recover a source code variant of the program. This process will typically lead not to the original socurce code but to a strongly diverging version as a binary porgram not represents all informations carried in the original source code. Therefore for instance, comments and function names can't be recovered anymore, if the program was compiled as release version without additional debug informations.
|Title||Original release||Source code by decompilation and disassembling of the binary.||Genre||Original developer||Additional information|
|Albion||1996||2011||Adventure game||Blue Byte||In 2011 via static recompilation from the original x86 binary executable a port for the ARM architecture of the Pandora handheld was created by fans. The community still updates this recompiled version and released also Windows and Linux builds in 2015.|
|Another World||1991||2011||Platform game||Delphine Software International||In 2011, Fabien Sanglard analysed Another World by reverse engineering and reconstructed a complete C++ source code variant of the internal virtual machine based one a earlier approach.|
|Dungeon Keeper||1997||2000||realtime dungeon simulator||Tomasz Lis works on reverse engineered version called "KeeperFX" with the resulting source code released as GPLv3.|
|Dungeon Master||1989||2001||Dungeon crawler||Bullfrog||In 2001 Dungeon Master and its successor CSB were reverse engineered to a pure C version called "CSBwin" by Paul R. Stevens in years of work.|
|Tennis for two||1958||2008||Arcade||In 2008 Tennis for Two, a video game from 1958, was recreated using partly modern parts.|
|Starcraft||1989||2005||Real-time strategy||Blizzard Entertainment||By static recompilation and reverse engineering of the original x86 version an unofficial version for the Pandora handheld and the ARM architecture became available in 2014.|
|Strike Commander||1993||2005||Flight simulator||In 2013 a SC reverse engineering project by Fabien Sanglard with a reconstructed source code variant became available on GitHub as the original source code was most probably lost in the take over of Origin by EA (Abandonware).|
- List of open source game engines
- List of open source video games
- List of commercial software with available source code
- List of formerly proprietary software
- List of commercial video games released as freeware
- List of freeware games
- Source port
- "Purchasing Abuse". Archived from the original on 2003-06-10. Retrieved 2007-09-07.
- Aliens Vs Predator - Source code update (4. January 2013)
- AvP/trunk/License.txt The source code to Aliens Vs Predator is copyright (c) 1999-2000 Rebellion and is provided as is with no warranty for its suitability for use. You may not use this source code in full or in part for commercial purposes. Any use must include a clearly visible credit to Rebellion as the creators and owners, and reiteration of this license.
- allegiancelicense.txt Microsoft Research Shared Source license agreement ("MSR-SSLA")
- Colayco, Bob (2004-02-06). "Microsoft pledges Allegiance to its fanbase". gamespot.com. Retrieved 2011-07-22.
- Ares on amrosiasw.com
- Parrish, Kevin (2009-07-07). "Atari 7800 Source Code Rescued - Atari released the source code for the 7800 console and games". tomsguide.com. Retrieved 2012-01-09.
- "7800 Games & Development". atari-museum.com. 2009. Retrieved 2012-01-09.
These games were rescued from Atari ST format diskettes that were thrown out behind 1196 Borregas when Atari closed up in 1996. The Atari Museum rescued these important treasures and recovered them from the diskettes.
- Michael Kurinnoy (2007-02-20). "AstroMenace Press Release" (PDF). Viewizard. Retrieved 2010-03-08.
- "Aquaria goes open source!". Wolfire Games blog. 2010-06-03.
- Aztaka Developer’s Edition on amanitadesign.com (January 7, 2011)
- Aztaka Developer's Edition Released on gamershell.com (January 10, 2011)
- "linuX-gamers.net - Savage: The Battle for Newerth now Freeware". linux-Gamers. Archived from the original on June 8, 2008. Retrieved 2008-11-02.
- Newerth Savage XR - About us In 2007 Newerth.com acquired the source code for Savage: The battle for Newerth and announced its continued development with the implementation of new features and content into the game via a patch named XR, incorporating previous community modifications.
- Leyda, Jeff. "The Beyond Castle Wolfenstein Project - Beyond Castle Wolfenstein Project Quick FAQ". www.oldskool.org. Retrieved 2014-08-31.
Q) Do you have the rights to distribute this game? A) Hopefully! Silas Warner's wife has granted permission to release the source code and game executables as a small memorial of his work.
- Blades of Exile Source Code
- Benson, Julian (2013-07-08). "Blake Stone: Planet Strike source code released after almost 20 years". PC Games. Retrieved 2013-07-11.
- source code of Blake Stone with license
- Larabel, Michael (June 6, 2014). "id Software's Softdisk Open-Sources Some Really Old Games". Phoronix. Retrieved June 6, 2014.
- Bell, John (2009-10-01). "Opening the Source of Art". Technology Innovation Management Review. Retrieved 2012-12-30.
[...]that no further patches to the title would be forthcoming. The community was predictably upset. Instead of giving up on the game, users decided that if Activision wasn't going to fix the bugs, they would. They wanted to save the game by getting Activision to open the source so it could be kept alive beyond the point where Activision lost interest. With some help from members of the development team that were active on fan forums, they were eventually able to convince Activision to release Call to Power II's source code in October of 2003.
- ""Open Source" Details, Licensing and Extra Information". December 31, 2010. Archived from Canabalt the original on 2013-05-25. Retrieved 2013-06-06.
- Hodgkins, Kelly (2010-12-31). "Popular indie game Canabalt goes open source". tuaw.com.
The developers behind Canabalt confirmed that the game's source code will be made available as part of an open source project. The game will be licensed under the MIT Open Source license, which will let other developers use the engine source code in its entirety for both personal and commercial projects. While the code powering the game is available for the world to use, the game art, sounds, animations and Canabalt game-specific code is still proprietary.
- (Polish) Announcement on Polish fan community page
- Jerz, Dennis (2007). "Somewhere Nearby is Colossal Cave: Examining Will Crowther's Original "Adventure" in Code and in Kentucky". Seton Hill University.
- David Kinder's guide to Adventure downloads at the Interactive Fiction Archive
- Colossal Cave Adventure Source Code on jerz.setonhill.edu (2007)
- GOG.com (2013-12-09). "Classic Gem Promo: Conquest: Frontier Wars". cdp.pl.
- Conquest: Frontier Wars on GOG on robertsspaceindustries.com
- Larabel, Michael (2012-11-02). "CoreCode's CoreBreach Game Goes Open-Source". Phoronix. Retrieved 2013-06-22.
- timothy (2012-08-07). "Dark Reign 2 Goes Open Source". slashdot.org. Retrieved 2013-08-13.
- "darkreign2". google code. 2011-09-01. Retrieved 2013-08-19.
- Palestar. "Medusa Engine License", retrieved January 22, 2010.
- Drafell. "Medusa Engine Source Code Released", DarkSpace Development Blog, June 21, 2009.
- D2X-XL sourceforge repository
- Dunkin, Alan (1998-01-26). "Descent Source Code Released". gamespot.com. Retrieved 2013-01-13.
Parallax Software, the software developer that created the popular three-dimensional action games Descent and Descent II, has released Descent's source code (version 1.5) to the public domain for noncommercial purposes.
- "Descent 3 - Past Headlines - 1999". Outrage Entertainment. Archived from the original on 2007-02-03. Retrieved 2007-02-07.
- Dink-Smallwood-Source-License Please keep in mind while I'm sharing the source, I am not sharing the media, if you would like to use or distribute the Dink Smallwood artwork, this requires express permission.
- Find free sounds for FreeDink
- "TTimo/doom.gpl3". GitHub. 2011-11-22. Retrieved 2011-11-23.
- Dragonfire source
- Eat The Whistle goes GPL! (archived)
- Eat the Whistle
- Empire Interactive (Europe) Limited Licence Agreement for Razorworks' "Enemy Engaged RAH-66 Comanche Versus KA-52 Hokum"
- EECH DevZone
- "The End of an Era!". Windward. 2005-10-01. Archived from the original on 2005-11-24. Retrieved 2013-10-26.
October 1, 2005: We just sold the last copy of Enemy Nations. [...] If you have a copy and want to give a copy to a friend - you have our permission to burn a CD with a copy of Enemy Nations - with one major caveat. You must give them the game. You cannot sell it to them. You cannot include it as part of anything you sell. It cannot be included with any product or magazine as a free extra. The person making the copy must even buy the blank CD. It must be a true free gift given totally separate of anything else.
- source code mirror at atomicgamer.com
- get-your-very-own-free-and-legal-copy (January 2006)
- "License for Original Code". launchpad.net/enations.
This is released under a limited license: 1) No rights are given to the game Enemy Nations, the trademark Enemy Nations, or the concept. 2) Windward intends to someday create an Enemy Nations II and reserves all rights for all future versions of the game. 3) You may not sell anything derived from this code, art, or anything else included. 4) This is released solely for people to learn from the code and to make fixes in the existing code that they will make available for free. If you don't like these restrictions, don't use this code/data.
- Bertolone, Giorgio (2011-03-12). "Interview with Kevin Klemmick - Lead Software Engineer for Falcon 4.0". Cleared-To-Engage. Archived from the original on 2011-03-18. Retrieved 2014-08-31.
[C2E] In 2000 the source code of Falcon 4.0 leaked out and after that groups of volunteers were able to make fixes and enhancements that assured the longevity of this sim. Do you see the source code leak as a good or bad event? [Klemmick] "Absolutely a good event. In fact I wish I’d known who did it so I could thank them. I honestly think this should be standard procedure for companies that decide not to continue to support a code base."
- "FreeFalcon". github.com. 2013-01-24. Retrieved 2013-09-11.
- Sulic, Ivan (2002-04-25). "Freespace Source Code". IGN. Retrieved 2013-01-11.
- von Eitzen, Chris (2010-06-10). "Indie game Gish source code released". h-online.com. Archived from the original on 13 November 2012. Retrieved 2013-01-13.
- "Gish goes open-source". Wolfire Games blog. 2010-05-30.
- tinyspeck (2013-11-18). "Glitch is Dead, Long Live Glitch! - Art & Code from the Game Released into Public Domain". glitchthegame.com. Retrieved 2013-12-11.
The entire library of art assets from the game, has been made freely available, dedicated to the public domain. Code from the game client is included to help developers work with the assets. All of it can be downloaded and used by anyone, for any purpose.
- Blackwell, Laura (2013-11-18). "Afterlife of an MMO: Glitch's offbeat art enters public domain". pcworld.com. Retrieved 2013-12-11.
- Sebayang, Andreas (2009-03-23). "Gothic 3 Community Patch soll fast alle Fehler beheben - Mehr als 700 Veränderungen im letzten Community Patch" (in German). Golem.de. Retrieved 2013-01-06.
Das Team hatte Zugriff auf den Quellcode von Gothic 3. Zusätzlich wurde auch inhaltlich an dem Spiel gearbeitet, da laut Patch Team ein Beheben aller Fehler nicht allein durch das Verändern des Quellcodes möglich war.
- Jens Andersson & Jan Kronqvist (2008-09-21). "The Gravity-Force 2 Homepage". lysator.liu.se. Retrieved 2013-10-13.
Jan made an archaeological expedition and recovered the GF2 source code from a dusty old floppy disc! We do not pretend it is a wonder in coding style (in fact, it is a complete disaster!), but for primarily nostalgic interest we publish it here.
- H-Craft Championship Purchase "In order to purchase H-Craft Championship please visit our reseller www.Manifestogames.com" (2007)
- H-Craft Championship CDnavigator.ru
- H-Craft Championship Freeware release announcement in Reddit
- H-Craft Championship Irrgheist News, February 25, 2015
- H-Craft Championship H-Craft Source Code
- Largent, Andy (2003-10-08). "Homeworld Source Code Released". www.insidemacgames.com. Retrieved 2012-12-23.
- "/trunk/license.txt – HoverRace". Svn.igglybob.com. 2008-11-29. Retrieved 2013-01-05.
- Source Code License (2008-11-29)
- Latest Patches on ironseed.com (March 24, 2013)
- Burnes, Andrew (2004-02-25). "Jagged Alliance 2 Source Code To Be Bundled With Wildfire". ign.com. Retrieved 2012-12-23.
- Kiloblaster Allen Pilgrim declared Kiloblaster freeware and released the source code.
- Amiga Games
- Kumquat & Cantaloupe - Full Games and Source on 22 November 2012
- Lugaru goes open source Wolfire Blog, May 11, 2010
- "Marathon 2 Source Code Released". mactech.com. 2000-01-17. Retrieved 2012-12-25.
Today at 7 pm CST Bungie Software releases the Mac source code for their classic game "Marathon 2: Durandal" to the net.
- Keller, Brian (2006-03-22). "MechCommander 2 EULA". Social.msdn.microsoft.com. Retrieved 2013-12-29.
- Fleshbourne, Daniel (2006-08-18). "Microsoft MechCommander 2 Shared Source Release". neowin.net. Retrieved 2012-12-30.
This is the Shared Source release for MechCommander 2. This release contains all of the source code and source assets required to build MechCommander 2. This release can be used with the Microsoft XNA Build March 2006 Community Technology Preview (CTP).
- Andrew Kirmse, Chris Kirmse (2012-09-15). "License for Meridian 59 v1.0". github.com. Retrieved 2013-10-08.
This source code is distributed under the terms of the GNU General Public License with the following special exception. As a special exception, the copyright holders of this program give you permission to link this program with the accompanying files wrap.dll and waveplay.dll.
- Mitchell, Robert (2001-11-19). "The Return of MiG Alley?". combatsim.com. Retrieved 2013-01-06.
Bob Mitchell: What has prompted you to release the source code for MiG Alley and Battle of Britain? Dave Whiteside: Because we are no longer doing flight sims [after Empire took us over at the end of 2001], and we would not be able to publish any patches that were required [no money was allocated to this], rather than let MiG die and all the code sit doing nothing it was considered a good idea, a swan song, if you like, for Rowan [after 13 years in the flight sim market].
- Wen, Howard (2004-06-10). "Keeping the Myths Alive". linuxdevcenter.com. Retrieved 2012-12-22.
[...]fans of the Myth trilogy have taken this idea a step further: they have official access to the source code for the Myth games. Organized under the name MythDevelopers, this all-volunteer group of programmers, artists, and other talented people devote their time to improving and supporting further development of the Myth game series.
- Myth II 1.7.2 Released for Linux! (28 Feb 2012)
- Thomsen, Michael (2011-08-24). "Building With Someone Else's Blocks: Going Open Source With Games". Gamasutra. p. 2. Retrieved 2013-10-25.
[...] the game struggled to attract subscribers and was canceled after its first year. Disappointed with the turn of events, Cyan decided to release Myst Online: Uru Live as an open source game in 2010 hoping fans would be able to give the game a new life.
- "unknownworlds / NS". github.
EXCLUDED CODE: The code described below and contained in the Natural Selection Source Code release is not part of the Program covered by the GPL and is expressly excluded from its terms.
- Unknown Worlds unleashes Natural Selection source code By Jenna Pitcher on Jan 23, 2014 at Polygon]
- No Gravity (Classic)
- nolf2-source-released-but-to-what-end (July 2011)
- Sierra has released the No One Lives Forever 2 Toolkit
- Paradox Interactive - Penumbra: Overture premieres game on Gamer's Gate
- "Penumbra: Overture Game And Engine Source Code Released For Free". MegaGames. 2010-05-14. Retrieved 2013-10-11.
- Ciolek, Todd (2012-10-17). "Among the Missing: Notable Games Lost to Time". 1up.com. Retrieved 2015-06-19.
Prince of Persia creator Jordan Mechner believed that the source code to the game's original Apple II version was gone when he failed to find it in 2002. Ten years later, Mechner's father uncovered a box of old games at the family home, and among them were disks containing Prince of Persia's bedrock program.
- Mastrapa, Gus (2012-04-20). "The Geeks Who Saved Prince of Persia’s Source Code From Digital Death". Wired. Retrieved 2012-11-30.
- parallelrealities.co.uk/LICENSE webarchive versions
- Debian bug #546800 - RM: starfighter -- RoM; copyright infringement
- Official PuppyGames Blog
- "Revenge of the Source Code". Puppy Games. 2011-04-20. Retrieved 2011-08-23.
- Shadowgrounds license
- Larabel, Michael (2011-04-22). "Frozenbyte Open-Sources Shadowgrounds Games". Phoronix. Retrieved 2011-05-06.
- "Going Open Source!". soaos.sourceforge.net. 2003-06-23. Retrieved 2011-08-02.
In order to give the Siege game an extended practical life, allow ongoing player support, give the game a chance to be made available on other platforms, and to share our technical learning experience with the game development community, the Board of Directors at Digital Tome LP have agreed to release the Delphi source to the Siege game to the Open Source community under an LGPL license!
- O'Connor, Alice (2015-05-15). "Space Engineers Shares Source Code". Rock, Paper, Shotgun. Retrieved 2015-06-16.
- Rosa, Marek (2015-05-14). "Space Engineers – full source code access, total modifications and 100,000 USD fund". marekrosa.org. Retrieved 2015-06-16.
Today we have a very important announcement for our modders and our community. We decided to give you 100% complete access to Space Engineers’ source code. This comes as a continuation of our decision to give more freedom to modders and community.
- SpaceEngineers on github.com
- micropolis license
- Simser, Bil (2008-01-10). "SimCity Source Code Released to the Wild! Let the ports begin...". weblogs.asp.net/bsimser. Retrieved 2012-12-30.
[...]Don Hopkins got a lot of work done on the finishing touches on releasing the original SimCity source code under the GNU General Public Library (GPL). The code won't have reference to any SimCity name as that has all be renamed to Micropolis. Micropolis was the original working title of the game and since EA requires that the GPL open source version not use the same name as SimCity (to protect their trademark) a little work had to be done to the code.
- LICENSE.DOC on github.com/id-Software/wolf3d
- Plunkett, Luke (2013-04-03). "Lucasarts' Closure Convinces Developers To Release Awesome Star Wars Source Code". Kotaku. Retrieved 2013-04-04.
In the wake of Lucasarts' closure today, Raven - the developers of the thoroughly excellent Jedi Outcast - have decided to release the source code for the game. Oh, and the code for its sequel, Jedi Academy, as well.
- Rubin, Brian (2012-01-16). "Starshatter: The Gathering Storm Goes Open Source!". spacegamejunkie.com. Retrieved 2013-01-08.
Apparently the excellent and unique military space sim, Starshatter: The Gathering Storm, has gone open source thanks to its original developer releasing the source code. [...]: "14 DEC, 2011 – STARSHATTER:THE GATHERING STORM – Open Source Version 5.0.5. This download Includes the cumulative Starshatter-TGS game up to version 5.0.5 (No CD Required). It is available for download from our “Lagacy Official File” section."
- doctorfrog (2012-02-06). "Because Stars Matter: Starshatter (Sci-Fi Flight Sim) is Free!". drfrog.wordpress.com. Retrieved 2012-01-08.
Starshatter: The Gathering Storm is a moderately complex, moderately realistic, spaceborne military flight sim that takes place in a series of dynamic campaigns.
- sais After being sold for several years by Cheapass Games, Strange Adventures in Infinite Space was released as free software and its source code was made available under the GNU General Public License. Go to the Strange Adventures in Infinite Space website to download the game, source code and various other goodies
- stellar_frontier_source_eula.txt STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE
- "Stellar Frontier Source Code - Released". stellarfrontier.ss-network.net. 2008-11-18. Retrieved 2013-10-13.
As of Tuesday, November 18, 2008, the Stellar Frontier source code has officially been released by Stardock Corporation. End-User License Agreement was updated June 19th 2010.
- Clark, Dave (2000-10-29). "Sopwith Code Support". Retrieved 2006-12-01.
- Clark, Dave. "Sopwith – Source Code". Dave Clark's Home Page. Retrieved 2006-12-01.
- "弊社製品のムービー再生にxvid.orgのムービー展開ライブラリを使用していた件について。" [Announcement Concerning Our Company's Use of Xvid.org's Video Codec Library for Video Playback in Products] (in Japanese). Aquaplus. 2005-12-22. Archived from the original on 2006-11-26. Retrieved 2010-12-18.
- "Leaf Forced to Release Game Source Code". Anime News Network. March 1, 2006. Retrieved 2008-12-11.
- GarageGames to Release T3D as Open Source on GarageGames (Eric Preisz 2012-10-09)
- "It's here! The MIT licensed Torque 3D GitHub repo is ready!".
- Tribes 1 and 2 source code anywhere on garagegames.com, 2013-01-04
- Free game graphics: Tyrian ships and tiles Daniel Cook (2007-04-04)
- Lost garden license
- Meer, Alec (2012-10-12). "Patchy Like It’s 1998: Unreal 1 Updated". rockpapershotgun.com. Retrieved 2012-12-21.
The list of fixes upon fixes are too long to mention here, but the essential purpose of v227 is to add DirectX9 and OpenAL support as well as mending everything that needs mending. Epic are aware of and permit the patch [...]
- Rose, Michael (2010-07-09). "Darwinia and Multiwinia Source Code Released". indiegames.com.
- The Source Code We get bored easily and once we've finished a game we want to work on something completely different. But wait, what if there's other cool stuff that could be done that we left out? If you are a programmer you can take any of our games to the next level by becoming a developer. Buy access to our hosted SVN repo and get forum access to chat about your mods with the rest of the community.
- "Quarter-Two Three Forums, discussion regarding the state of Warlords Battlecry 3's source code".
- "The Gibberlings 3 Forum discussion regarding the state of Warlords Battlecry 3's source code".
- Unofficial Patches on patches-scrolls.de
- links to prominent mods and unofficial patches for WBC3 on gog.com (2014)
- Updated GPL release readme Post by jaywalker_eidos » 11 Jun 2008, 16:53
- Allen Pilgrim declared Xargon freeware and released the source code.
- Art of Fighting Source Code for Neogeo (044)
- source code
- Callis, Matthew (2008-09-12). "Space Funky B.O.B. - Space Funky B.O.B. Source Code". superfamicom.org. Retrieved 2013-01-14.
This was originally posted on eludevisibility.org when I (Matthew Callis) originally bought these disks off eBay
- Smith, Quintin (2010-12-14). "Dark Engine Source Code Found In A Bag". Rock, Paper, Shotgun. Retrieved 2011-04-15.
As of this weekend, Christmas has come early for the Through the Looking Glass community. A CD’s been discovered containing the source code for the Dark Engine, aka the engine used by Thief, Thief II and System Shock 2 (not to mention Irrational and Looking Glass’ cancelled cold war spy game Deep Cover).
- Humphries, Matthew (2010-12-14). "Game engine used for Thief/System Shock 2 found with Dreamcast dev kitGames". Rock, Paper, Shotgun. Retrieved 2015-07-04.
If you asked me which is my favorite all time video game, my number one would be Thief II. So it’s with more than a little excitement that I report the source code for the Dark Engine, used to create Thief, Thief II, and System Shock 2, has been found.
- "Le Corbeau" (2012-09-25). "Thief 2 V1.19 & System Shock 2 V2.4". www.ttlg.com. Retrieved 2012-11-10.
This is an unofficial patch for Thief II: The Metal Age (T2) which updates the game from v1.18 to v1.19, providing improved support for modern hardware and correcting many known bugs.
- Pearson, Craig (2012-02-07). "Thief 2 Is Now On Good Old Games". Rock Paper Shotgun. Retrieved 2012-11-10.
[...]discovered that it suffers much of the same resolution and widescreen based trouble from the previous release, but this utility [Tafferpatch] fixed all my troubles [...]
- "Tafferpatcher: unofficial complete patch for Thief 2". www.ttlg.com. 2012-11-10. Retrieved 2012-11-10.
Included patches: - Patch 1.19 which eliminates all issues with modern hardware, widescreen resolutions, multi-core systems, etc.- Various mission, gamesys, model and texture fixes.[...]
- M-HT (2011-11-06). "Albion". openpandora.org. Retrieved 2014-04-03.
- M-HT (2011-06-11). "Albion". repo.openpandora.org. Retrieved 2014-04-02.
This is a port of the game's executable for Pandora (using static recompilation/binary translation).
- M-HT (2015-03-16). "Albion". boards.openpandora.org. Retrieved 2015-04-24.
Here is a version for Windows, in case anyone is interested. Unpack it into the directory where Albion is installed - read the Readme for more information (use Albion.cmd to run the game).
- Patterson, Blake (2011-12-26). "A Fascinating Look Under the Hood of 'Another World'". toucharcade.com. Retrieved 2013-10-14.
- Sanglard, Fabien (2011-12-23). ""Another World" Code Review". fabiensanglard.net. Retrieved 2013-01-14.
I spent two weeks reading and reverse engineering further the source code of Another World ("Out Of This World" in North America). I based my work on Gregory Montoir's "binary to C++" initial reverse engineering from the DOS executable. I was amazed to discover an elegant system based on a virtual machine interpreting bytecode in realtime and generating fullscreen vectorial cinematic in order to produce one of the best game of all time.
- Chaos Strikes Back for Windows (and Linux, MacOS X, Pocket PC) Mon, 2005-10-24 02:00
- Resurrecting Tennis for Two, a video game from 1958 By Windell Oskay on evilmadscientist.com (July 16, 2008)
- Steinlechner, Peter (2014-03-10). "Starcraft für ARM-Handheld kompiliert" (in German). golem.de. Retrieved 2014-03-25.
- notaz (2014-03-04). "StarCraft". openpandora.org. Retrieved 2014-03-26.
- Sanglard, Fabien (2014-01-22). "Reverse Engineering Strike Commander". Retrieved 2014-01-23.
Most people assume the source codes and gold versions of all finished games were stored in a Vault somewhere at EA. But after getting in touch with people at Wing Commander CIC, it appeared that all the source code was lost when the company closed.[...]On his first day one developer managed to delete the full 900MB of Strike Commander source tree.
- libRealSpace on github.com
|Wikimedia Commons has media related to Free video games.|
- Open source games at DMOZ
- Game Source Code Collection at the Internet Archive
- Liberated Games, specialized on open sourced computer games
- Open Source Game Clones, specialized in open source variants of commercial games
- Video Game Source Code Repository, archive of historical video game source code