Games

0 A.D. (C, C++, JavaScript, GPL-2.0, beta)
1oom (C, GPL-2.0, mature)
2006-rebotted (Java, 2-clause BSD, mature)
2048 (JavaScript, Java, MIT, mature)
2H4U (C++, GPL-2.0, mature, inactive since 2007)
3D Pong (C, GPL-2.0, beta, inactive since 2004)
3d.city (JavaScript, GPL-3.0, mature, inactive since 2016)
3Dc (C, GPL-2.0, mature, inactive since 2000)
4D Maze Game (Java, Public domain, mature, inactive since 2008)
4D-TRIS (C, GPL-2.0, mature, inactive since 2012)
54321 (C++, Custom, mature, inactive since 2001)
A Planet's Revenge (Python, GPL-3.0, beta, inactive since 2008)
A7Xpg (D, 2-clause BSD, beta, inactive since 2005)
Abe's Amazing Adventure (C, GPL-2.0, mature, inactive since 2005)
Abuse (C++, Lisp, Public domain, GPL-2.0, WTFPL, mature, inactive since 2011)
Achtung, die Kurve! (JavaScript, AGPL-3.0, mature)
ACM (C, GPL-2.0, mature, inactive since 2000)
AdaDoom3 (Ada, GPL-3.0, beta)
AdaGate (Ada, GPL-3.0, mature)
Adanaxis (C++, GPL-2.0, mature, inactive since 2007)
AdaVenture (Ada, GPL-3.0, mature)
Advanced Strategic Command (C++, GPL-2.0, mature)
adventure engine (Lua, MIT, mature, inactive since 2013)
Afternoon Stalker (C++, GPL-2.0, mature, inactive since 2012)
AI Wars (Python, MIT, beta, inactive since 2010)
Airstrike (C, GPL-2.0, beta, inactive since 2014)
Aisleriot (C, Scheme, GPL-3.0, mature)
Ajax3d (JavaScript, GPL-2.0, beta, inactive since 2007)
Aklabeth (C, GPL-2.0, mature, inactive since 2004)
Aleph One (C++, Lua, GPL-3.0, mature)
Alex the Allegator 4 (C, GPL-2.0, mature, inactive since 2003)
Alien Assault Traders (PHP, GPL-2.0, beta, inactive since 2009)
Alimer (C++, MIT, beta)
alive (C++, MIT, beta)
Allure of the Stars (Haskell, AGPL-3.0, beta)
Amphetamine (C, GPL-2.0, beta, inactive since 2008)
Anagramarama (C, GPL-2.0, beta, inactive since 2002)
Ancient Beast (JavaScript, AGPL-3.0, mature)
Andor's Trail (Java, GPL-2.0, beta)
android-chess (Java, C++, MIT, mature)
Angband (C, GPL-2.0, mature)
Angry Birds in Python (Python, MIT, mature, inactive since 2017)
Annex: Conquer the World (Lua, GPL-3.0, mature, inactive since 2014)
Antares (C++, LGPL-3.0, beta)
Anteform (Lua, GPL-3.0, beta)
AntiChess (Java, MIT, beta, inactive since 2003)
antiyoy (Java, GPL-3.0, beta)
Anura (C, C++, zlib, mature)
Anuto (Java, GPL-2.0, mature)
Apple Flinger (Java, GPL-3.0, mature)
Apricots (C++, GPL-2.0, beta, inactive since 2003)
aquastax (JavaScript, MIT, beta)
Arashi-JS (JavaScript, GPL-2.0, beta, inactive since 2010)
Arcane-Engine (C++, MIT, beta)
Ardentryst (Python, GPL-3.0, mature, inactive since 2009)
Ares Dogfighter (Java, GPL-3.0, beta, inactive since 2016)
Argentum Online (Visual Basic, GPL-2.0, AGPL-3.0, beta, inactive since 2014)
Armagetron Advanced (C++, GPL-2.0, mature)
Armies (C++, GPL-3.0, mature, inactive since 2007)
Armor Alley (JavaScript, CC-BY-NC-3.0, beta)
Artillery Duel Reloaded (Python, GPL-3.0, beta, inactive since 2012)
Arx Libertatis (C++, GPL-3.0, mature)
asdf (JavaScript, MIT, mature)
AssaultCube (C, C++, Custom, mature, inactive since 2018)
AstroMenace (C++, C, GPL-3.0, mature)
ativayeban (C, C++, GPL-2.0, mature, inactive since 2015)
Atomic Tanks (C++, GPL-2.0, mature, inactive since 2016)
Atomiks (C, GPL-3.0, mature, inactive since 2015)
Atomix (C, GPL-2.0, mature)
Atrinik (C, Python, GPL-2.0, mature, inactive since 2016)
Attal: Lords of doom (C++, GPL-2.0, mature, inactive since 2008)
Augustus (C, C++, AGPL-3.0, mature)
Aussenposten (JavaScript, MIT, beta, inactive since 2015)
Avanor (C++, Lua, GPL-2.0, beta, inactive since 2008)
Azimuth (C, GPL-3.0, mature)
Bacon2D (C++, MIT, beta, inactive since 2018)
Balder2D (C++, GPL-2.0, beta, inactive since 2009)
Ball and Paddle (C++, Scheme, GPL-3.0, beta, inactive since 2009)
Ball And Wall (JavaScript, MIT, mature, inactive since 2015)
Ballerburg SDL (C, GPL-3.0, mature)
Barony (C++, GPL-3.0, mature)
Bastet (C++, GPL-2.0, beta, inactive since 2018)
Batalla Naval (C, GPL-2.0, mature, inactive since 2002)
Batrachians (C++, GPL-2.0, beta, inactive since 2012)
Battery (Java, EPL-2.0, Custom, mature, inactive since 2009)
Battle City (C, C++, Pascal, GPL-3.0, mature, inactive since 2013)
Battle Tanks (C++, GPL-2.0, mature, inactive since 2009)
Battlefield Java (Java, GPL-3.0, beta, inactive since 2011)
Battleround (Java, Apache-2.0, beta, inactive since 2015)
Battles of Antargis (C, C++, GPL-2.0, beta, inactive since 2014)
Beat Feet (Kotlin, GPL-3.0, mature)
Beat Harvester (Python, GPL-2.0, beta, inactive since 2009)
Berusky II (C++, GPL-3.0, beta)
Berusky (C++, GPL-3.0, mature)
Betrayer's Moon Tactics (JavaScript, GPL-2.0, beta, inactive since 2006)
BetterSpades (C, GPL-3.0, beta)
Between (PHP, C++, ?, beta, inactive since 2010)
Billiards (Lua, Objective-C, GPL-3.0, beta, inactive since 2012)
Biniax (C, zlib, mature, inactive since 2012)
Biogenesis (Java, GPL-2.0, beta)
Birth of the Empires (C++, Custom, mature, inactive since 2016)
Bitfighter (C, C++, GPL-2.0, mature)
BitRiot (C++, Apache-2.0, beta, inactive since 2017)
Black Shades Elite (?, ?, beta, inactive since 2007)
BlackNova Traders (PHP, JavaScript, GPL-2.0, beta, inactive since 2012)
Blackvoxel (C++, GPL-3.0, mature)
Bladecoder Adventure Engine (Java, Apache-2.0, mature)
BlakedAwesomenaughts (JavaScript, PHP, MIT, beta, inactive since 2015)
Blasphemer (None, None, mature, inactive since 2017)
Blinken (C++, GPL-2.0, mature)
Blitwizard (C, C++, Lua, zlib, beta, inactive since 2015)
Blitzkrieg (Java, GPL-3.0, beta, inactive since 2012)
Blob Wars : Attrition (C, C++, GPL-3.0, mature)
Blob Wars Episode 2 : Blob And Conquer (C++, GPL-2.0, mature, inactive since 2016)
Blobby Volley 2 (C++, GPL-2.0, mature, inactive since 2017)
Bloboats (C++, GPL-2.0, mature, inactive since 2006)
Blobwars: Metal Blob Solid (C++, GPL-2.0, mature)
Block Attack - Rise of the Blocks (C++, GPL-2.0, mature)
Block Puzzle Stone Wars (Java, MIT, mature)
BlockOut II (C++, GPL-2.0, mature, inactive since 2014)
Bloodmasters (C#, GPL-2.0, mature, inactive since 2008)
boardgame.io (JavaScript, TypeScript, MIT, beta)
BobBall (Java, 2-clause BSD, mature, inactive since 2017)
BomberClone (C, GPL-2.0, beta, inactive since 2010)
Bombermaaan (C++, GPL-3.0, mature, inactive since 2010)
Bombic2 (C++, GPL-2.0, beta, inactive since 2010)
Bombic (C++, Objective-C, GPL-2.0, beta, inactive since 2005)
Bombman (Python, CC0, mature)
Boohu (Go, ISC, beta)
BOOM: Remake (C++, Custom, mature)
Bos Wars (C++, GPL-2.0, mature, inactive since 2013)
Boson (C++, GPL-2.0, beta, inactive since 2006)
Boulder Dash (Java, MIT, mature, inactive since 2015)
Bouncy the Hungry Rabbit (Python, GPL-2.0, mature, inactive since 2007)
Brain Workshop (Python, GPL-2.0, mature, inactive since 2011)
bratwurst (Lisp, GPL-2.0, mature, inactive since 2009)
Breakout-VR (C#, MIT, beta, inactive since 2017)
Bridge Command (C++, GPL-2.0, mature)
Brikx (C++, GPL-2.0, beta, inactive since 2009)
BRIQUOLO (C++, GPL-3.0, mature, inactive since 2008)
British Bingo (JavaScript, GPL-3.0, mature)
Brogue (C, AGPL-3.0, mature)
BrowserQuest (JavaScript, MPL-2.0, mature)
Brutal Chess (C++, GPL-2.0, beta, inactive since 2007)
BStone (C++, GPL-2.0, mature)
buggyGame (Python, GPL-2.0, beta, inactive since 2007)
BurgerSpace (C++, GPL-2.0, mature, inactive since 2013)
Bygfoot (Java, GPL-2.0, beta)
BZFlag (C++, LGPL-2.1, MPL-2.0, mature)
C-Dogs SDL (C, GPL-2.0, mature)
C-evo (Pascal, Public domain, GPL-3.0, mature, inactive since 2013)
C3DE (C#, MIT, beta)
c64-nuclearreaction (C, Assembly, GPL-3.0, mature, inactive since 2014)
Cabbages and Kings (Python, MIT, mature)
Cadaver (C++, GPL-2.0, beta, inactive since 2009)
CaesarIA (C++, JavaScript, C, GPL-3.0, beta)
Candy Box 2 (TypeScript, JavaScript, GPL-3.0, mature, inactive since 2013)
Cannon Smash (C++, GPL-2.0, beta, inactive since 2003)
Cannonball (C++, MAME, beta)
Canta (Python, GPL-3.0, beta, inactive since 2011)
Caph (C, GPL-3.0, mature, inactive since 2010)
Card Stories (JavaScript, Python, AGPL-3.0, beta, inactive since 2012)
Cart Life (AGS Script, Custom, mature, inactive since 2014)
Castle of the Winds in Elm (Elm, JavaScript, MIT, beta)
Castle of the Winds (JavaScript, MIT, beta, inactive since 2016)
Castle-Combat (Python, GPL-2.0, beta, inactive since 2006)
Cat Mother Dead Justice (C++, 3-clause BSD, GPL-2.0, beta, inactive since 2003)
Cataclysm: Dark Days Ahead (C++, CC-BY-SA-3.0, mature)
Cataclysm (C++, CC-BY-SA-3.0, beta, inactive since 2012)
CatacombGL (C++, GPL-3.0, beta)
CatacombSDL (C, GPL-2.0, mature, inactive since 2014)
Catan Dice Game (Java, GPL-3.0, mature)
Catch Challenger (C++, C, GPL-3.0, mature)
Cattle Bity (TypeScript, MIT, mature)
CaveExpress (C, JavaScript, GPL-3.0, mature)
CavePacker (JavaScript, C, C++, Lua, GPL-3.0, mature)
CAVEZ of PHEAR (C, GPL-3.0, beta, inactive since 2011)
cc94 (C++, Python, AGPL-3.0, beta)
CCCP (C++, AGPL-3.0, beta)
Celestron (Python, GPL-3.0, beta, inactive since 2012)
CETech (C, C++, CC0, beta)
chainreaction (Java, LGPL-3.0, mature, inactive since 2017)
Chaos Esque Anthology (?, ?, mature)
Chess3D (JavaScript, Python, GPL-3.0, mature, inactive since 2016)
Children of Ur (Dart, JavaScript, MIT, beta)
Childsplay (Python, GPL-3.0, mature)
Chocolate Doom (C, GPL-2.0, mature)
Chocolate Duke3D (C, GPL-2.0, Custom, beta, inactive since 2016)
Choria (C++, C, Lua, GPL-3.0, mature)
Chromium B.S.U. (C++, Artistic License-1.0, mature)
Chronoshift (C++, GPL-2.0, beta)
Chrzaszcz (C++, GPL-3.0, beta, inactive since 2018)
Chunk Stories (Kotlin, Java, LGPL-3.0, beta)
Circus Linux! (C, GPL-2.0, mature, inactive since 2000)
Citybound (Rust, JavaScript, AGPL-3.0, beta)
Civil (Python, GPL-2.0, beta, inactive since 2003)
Civilization: Call To Power 2 Source Project (C, C++, Custom, mature)
Civitas (Java, Blender Script, GPL-2.0, beta, inactive since 2017)
CivOne (C#, CC0, beta)
ClanLib (C, C++, zlib, mature)
Classic Blades of Exile (C++, GPL-2.0, mature)
Classic RBDoom 3 BFG (C, C++, GPL-3.0, mature)
Clonepoint (C++, GPL-3.0, beta)
Clumsy Bird (JavaScript, MIT, mature, inactive since 2017)
coab (C#, C, ?, mature)
Colditz Escape (C, GPL-3.0, mature)
Colobot: Gold Edition (C++, GPL-3.0, mature)
Colonization too (C++, GPL-2.0, beta, inactive since 2004)
Colossal Cave Adventure (Python, Apache-2.0, mature)
Combat Simulator Project (C++, GPL-2.0, beta, inactive since 2010)
Commander Genius (C, C++, GPL-2.0, mature)
CommandoJS (JavaScript, CoffeeScript, MIT, beta, inactive since 2012)
Conquest (C++, MIT, mature)
Conquests (C++, GPL-2.0, mature, inactive since 2012)
Consomaton (TypeScript, MIT, mature, inactive since 2016)
Construo (C++, GPL-3.0, beta, inactive since 2015)
Core War (C, Java, GPL-2.0, 2-clause BSD, mature)
CorEngine (C, zlib, beta, inactive since 2015)
CorsixTH (Lua, C++, MIT, mature)
Cosmo-Engine (C, GPL-2.0, beta)
Cosmosmash (C++, GPL-2.0, mature, inactive since 2013)
CoTerminalApps (Ada, GPL-3.0, mature)
Crack Attack! (C++, GPL-2.0, mature, inactive since 2005)
Craft (C, Python, MIT, mature, inactive since 2017)
CrappyBird (JavaScript, MIT, mature, inactive since 2017)
Creep Smash (Java, GPL-3.0, beta, inactive since 2011)
Crimson Fields (C++, GPL-2.0, mature, inactive since 2010)
Critical Velocity (Java, Apache-2.0, mature, inactive since 2017)
Critterding (C++, GPL-2.0, beta, inactive since 2013)
Crossfire (C, Java, GPL-2.0, mature)
CrossUO (C, C++, GPL-3.0, mature)
Crosswords (Java, GPL-2.0, mature)
Crown and Cutlass (C++, Custom, beta, inactive since 2009)
Crown (C, C++, Vala, MIT, beta)
CrystalQuest (JavaScript, MIT, mature, inactive since 2017)
Cubosphere (C, C++, Lua, GPL-3.0, beta)
Cultivation (C++, Public domain, mature, inactive since 2010)
Curse of War (C, C++, GPL-3.0, mature, inactive since 2014)
CuteMaze (C++, GPL-3.0, mature)
Cuyo (C++, GPL-2.0, mature, inactive since 2014)
Cytadela (C++, GPL-3.0, beta, inactive since 2013)
Cytopia (C++, GPL-3.0, beta)
D2X-XL (C++, Custom, GPL-2.0, mature, inactive since 2015)
Daggerfall Unity (C#, MIT, mature)
Daimonin (C, GPL-2.0, mature)
Danger from the Deep (C++, GPL-2.0, beta, inactive since 2011)
Dark Destiny (Java, JavaScript, ?, mature, inactive since 2016)
Dark Oberon (C++, GPL-2.0, mature, inactive since 2009)
DarkCity (PHP, GPL-3.0, mature, inactive since 2012)
DarkPlaces (C, GPL-2.0, mature, inactive since 2014)
Data Storm (C, Apache-2.0, mature, inactive since 2017)
Dave Gnukem (C++, GPL-2.0, mature)
Dawn (C++, Lua, GPL-3.0, beta, inactive since 2011)
Deathchase 3D (C, Perl, GPL-2.0, mature, inactive since 2002)
Decker (Java, GPL-2.0, beta, inactive since 2013)
Deer Portal (C++, zlib, beta)
Defendguin (C, GPL-2.0, mature, inactive since 2009)
Defendo (GDScript, PHP, GPL-3.0, mature, inactive since 2018)
Deliantra (C, GPL-2.0, mature)
DelverEngine (Java, Custom, mature)
DemiGod (Java, GPL-3.0, beta, inactive since 2013)
Der Clou! (C, Custom, beta, inactive since 2017)
DesktopAdventures (C, LGPL-2.1, beta)
Destination Sol (Java, Apache-2.0, mature)
Devana (PHP, zlib, beta)
Devilution (C, C++, Unlicense, mature)
DevilutionX (C, C++, Unlicense, mature)
DGEngine (C++, zlib, GPL-3.0, beta)
dhewm3 (C, C++, GPL-3.0, mature)
diablo-js (Java, JavaScript, MIT, mature)
Digbuild (C, C++, GPL-2.0, beta, inactive since 2011)
Digger Remastered (C, GPL-2.0, mature, inactive since 2004)
Digital: A Love Story (Ren'Py, CC-BY-NC-SA-3.0, mature)
Dingo-Engine (Java, 3-clause BSD, beta, inactive since 2016)
DirectX12GameEngine (C#, MIT, beta)
Divercity (Java, GPL-3.0, beta, inactive since 2015)
DNT (C++, GPL-3.0, beta, inactive since 2016)
Do It Yourself Doom With SDL (C++, MIT, beta)
Domination (Java, GPL-3.0, mature)
Domino On Acid (Java, GPL-2.0, mature, inactive since 2009)
Doom Legacy (C++, GPL-2.0, mature)
DOOM Retro (C, C++, GPL-3.0, mature)
DOOM-iOS (C++, C, GPL-2.0, mature, inactive since 2012)
Doom64EX (C, C++, GPL-2.0, mature)
DOOM (C, Custom, mature, inactive since 2012)
Doomsday Engine (C, C++, GPL-2.0, GPL-3.0, LGPL-3.0, mature)
Dope Wars (C, GPL-2.0, mature, inactive since 2013)
Dragon History - Dračí Historie (Pascal, Script, GPL-2.0, mature, inactive since 2010)
Dragon Hunt (Python, GPL-2.0, mature)
dRally (Assembly, C, MIT, beta)
DreamChess (C, GPL-3.0, beta)
DreamZZT (C, C++, GPL-2.0, beta, inactive since 2007)
Dreerally (C, C++, Custom, beta)
DRL (Lua, Pascal, GPL-2.0, mature)
DroidZebra (C, Java, GPL-3.0, mature, inactive since 2015)
Duality (C#, MIT, mature)
Duck Marines (Lua, zlib, mature, inactive since 2016)
Duel Commander (C, GPL-3.0, beta, inactive since 2009)
Duke3D (C, GPL-2.0, beta, inactive since 2009)
Duke3d_w32 (C, GPL-2.0, beta, inactive since 2008)
DukeGDX (Java, GPL-3.0, beta)
Dune Dynasty (C, GPL-2.0, mature, inactive since 2014)
Dune II - The Maker (Java, MIT, beta)
Dune Legacy (C++, GPL-2.0, mature)
Dungeon Craft (C++, GPL-2.0, mature)
Dungeon Crawl Stone Soup (C++, Lua, GPL-2.0, mature)
Dungeon Hero (Java, MIT, mature)
Dungeon Monkey Eternal (Python, GPL-2.0, mature, inactive since 2016)
Dungeon Monkey Unlimited (Pascal, LGPL-2.1, mature, inactive since 2010)
Dungeon Quest (Java, MIT, mature)
Dunnet (Emacs Lisp, GPL-3.0, mature, inactive since 1992)
Dust Racing 2D (C, C++, GPL-3.0, mature)
DwarfCorp (C#, MIT, mature)
DXX-Rebirth (C, C++, Python, GPL-3.0, Custom, mature)
DynaDungeons (GDScript, GPL-3.0, beta, inactive since 2018)
eAdventure (Java, C#, GPL-3.0, mature, inactive since 2014)
Eat The Whistle (C, ?, mature, inactive since 2017)
Ecksdee (C++, GPL-2.0, beta, inactive since 2009)
ECWolf (C++, GPL-2.0, LGPL-2.1, zlib, MIT, IJG, Public domain, mature)
EDuke32 (C, C++, GPL-2.0, mature)
Egoboo (C++, C, GPL-3.0, mature, inactive since 2015)
Einstein Puzzle (C++, GPL-2.0, mature, inactive since 2005)
ElonaFoobar (C++, Lua, MIT, mature)
Elysium Engine (C, GPL-2.0, beta, inactive since 2006)
Emilia Pinball (C++, GPL-2.0, beta)
Empty Clip (C++, GPL-2.0, mature)
EmptyEpsilon (C, C++, Lua, GPL-2.0, mature)
Enchanted Fortress (Java, LGPL-3.0, mature)
Endgame: Singularity (Python, GPL-2.0, beta)
Endless Sky (C++, GPL-3.0, mature)
Enduro tribute (JavaScript, MIT, mature)
Enigma (C, C++, GPL-2.0, mature)
EnTT Pacman (C, C++, MIT, mature)
Eos, Dawn of Light: A Space Opera (Python, MIT, beta, inactive since 2007)
Epiar (C, C++, Lua, GPL-2.0, beta)
EPOH (JavaScript, MIT, beta)
erampage (C, GPL-2.0, beta, inactive since 2015)
Erebus (C++, GPL-3.0, beta)
Escape Towards The Unknown (C, GPL-2.0, beta, inactive since 2016)
Esenthel Engine (C, C++, Custom, beta)
ET: Legacy (C, C++, Lua, GPL-3.0, mature)
Eternal Lands (C, C++, Custom, mature)
EternalWinterWars (Java, MIT, beta, inactive since 2014)
Etterna (C, C++, Lua, MIT, beta)
Evil Cult (Haxe, JavaScript, GPL-3.0, mature)
Evol Online (C, GPL-3.0, mature)
Excellent Bifurcation (C, GPL-2.0, mature, inactive since 2007)
Executive Man (JavaScript, Custom, mature, inactive since 2017)
Extreme Tux Racer (C++, GPL-2.0, beta, inactive since 2018)
Exult (C++, GPL-2.0, mature)
ezQuake (C, C++, GPL-2.0, mature)
F-1 Spirit (C++, ?, beta, inactive since 2009)
Fairy-Max (C, Custom, mature, inactive since 2018)
Falcon's Eye (C, NetHack General Public License, mature, inactive since 2004)
Fall of Imiryn (C++, Python, GPL-3.0, beta, inactive since 2009)
Fallen Spire (Python, GPL-3.0, beta, inactive since 2009)
Falling Time (C, C++, GPL-2.0, mature)
Falltergeist (C++, GPL-3.0, beta)
Fanwor (C, GPL-2.0, mature)
FAR Colony (Pascal, GPL-3.0, beta, inactive since 2014)
Faur (C, Python, C++, GPL-3.0, beta)
Fictional Air Combat (C, C++, GPL-3.0, beta, inactive since 2012)
FIFE (C++, Python, LGPL-2.1, beta)
Fire Strike Retro (Java, Haxe, JavaScript, Ruby, PHP, MIT, mature)
First Strike (Java, MIT, mature, inactive since 2018)
Fish Fillets - Next Generation (C++, GPL-2.0, mature)
Flappy Cow (Java, MIT, mature)
Flex Engine (C++, MIT, beta)
FlightGear (C++, GPL-2.0, mature)
FLTK Recycling Game! (C++, LGPL-2.1, mature, inactive since 2014)
FLTrator (C++, GPL-3.0, mature, inactive since 2016)
Fluid Table Tennis (JavaScript, MIT, mature, inactive since 2013)
Flukz (C++, GPL-2.0, beta, inactive since 2014)
fonline (C, C++, C#, GPL-3.0, beta)
FooBillard++ (C, GPL-2.0, mature, inactive since 2012)
FooBillard (C, GPL-2.0, mature, inactive since 2010)
Forsaken (C, C++, GPL-2.0, Proprietary, beta, inactive since 2013)
FQuake3 (F#, C, GPL-2.0, beta, inactive since 2014)
fRaBs (Lisp, C++, C, Public domain, mature, inactive since 2016)
Free Allegiance (C++, MIT, mature)
Free Heroes 2 (C++, GPL-2.0, beta, inactive since 2015)
Free in the Dark (engine) (C, C++, GPL-2.0, beta)
Free Mars (Java, GPL-3.0, mature)
Free Space Colonization (C, GPL-2.0, beta, inactive since 2017)
Free Tennis (OCaml, GPL-2.0, beta, inactive since 2005)
freeablo (C++, GPL-3.0, beta)
freeaoe (C++, GPL-3.0, beta)
FreeBlocks (C, Java, GPL-3.0, beta, inactive since 2015)
Freeciv Alpha Centauri project (C, GPL-2.0, beta, inactive since 2003)
Freeciv-web (JavaScript, Java, Python, AGPL-3.0, mature)
Freeciv (C, GPL-2.0, mature)
FreeCol (Java, GPL-2.0, mature)
FreeCS (QuakeC, GPL-2.0, mature)
Freedoom (None, None, beta)
FreedroidRPG (C, C++, Lua, GPL-2.0, mature)
FreeFalcon (C, C++, 2-clause BSD, inactive since 2014)
freegish (C, GPL-2.0, beta, inactive since 2017)
Freekick 3 (C++, Python, GPL-3.0, mature, inactive since 2015)
FreeLords (Java, GPL-2.0, beta, inactive since 2017)
Freeminer (C++, Lua, GPL-3.0, beta)
Freenukum (C, GPL-3.0, beta, inactive since 2009)
FreeOrion (C++, Python, GPL-2.0, beta)
FreePrince (C, GPL-2.0, beta, inactive since 2011)
FreeRails (Java, C++, GPL-2.0, beta, inactive since 2008)
FreeRCT (C++, GPL-2.0, beta, inactive since 2016)
Freeserf.net (C#, GPL-3.0, mature)
Freeserf (C, C++, GPL-3.0, mature)
FreeSiege (C++, GPL-3.0, beta)
FreeSims (C#, MPL-2.0, beta)
FreeSO (C#, MPL-2.0, beta)
Freestars (C++, GPL-2.0, beta, inactive since 2008)
FreeSynd (C++, GPL-2.0, beta, inactive since 2017)
FreeTrain (C#, LGPL-2.1, beta, inactive since 2009)
freeVikings (Ruby, GPL-2.0, beta)
Frets on Fire X (Python, GPL-2.0, mature)
Frets on Fire (Python, GPL-2.0, mature, inactive since 2008)
Freya Game Engine (Java, LGPL-2.1, beta, inactive since 2002)
Friking Shark (C++, C, GPL-3.0, mature)
Froggix (Python, GPL-3.0, beta, inactive since 2009)
Frozen Bubble (Perl, GPL-2.0, mature, inactive since 2012)
Fujo (Python, CC-BY-SA-4.0, mature, inactive since 2014)
FunLabyrinthe (Pascal, GPL-2.0, mature, inactive since 2012)
Galaxy Forces V2 (C++, Public domain, mature)
GalaxyMage Redux (Python, GPL-2.0, beta, inactive since 2011)
GalaxyNG (C, GPL-2.0, mature, inactive since 2005)
GameCake (C, C++, Lua, MIT, mature)
GameLV (C++, GPL-2.0, beta)
Gang Garrison 2 (Game Maker Script, MPL-2.0, mature)
Garith (C++, LGPL-2.1, mature, inactive since 2013)
GCompris (C, Python, GPL-3.0, mature)
GDash (C++, MIT, beta)
GDHexGrid (GDScript, MIT, mature)
GearHead 2 (Pascal, LGPL-2.0, beta)
GearHead (Pascal, LGPL-2.1, Apache-2.0, mature)
Gee Whiz (C, GPL-2.0, beta, inactive since 2004)
Gem Drop X (C, GPL-2.0, beta, inactive since 2002)
ges-code (C, C++, GPL-3.0, mature)
Ghostly (C++, GPL-3.0, mature, inactive since 2016)
Gift Grabber (JavaScript, Apache-2.0, mature)
Gigalomania (C++, GPL-2.0, mature)
Gilbert and the doors (C, GPL-3.0, mature, inactive since 2018)
gist-txt (JavaScript, MIT, mature, inactive since 2018)
GJID (C++, MIT, mature, inactive since 2017)
GL-117 (C++, GPL-2.0, mature, inactive since 2005)
Glest (C++, GPL-2.0, mature, inactive since 2009)
Globulation 2 (C++, GPL-3.0, mature)
Gloomy Dungeons 2 (Java, MIT, mature)
Gloomy Dungeons (Java, MIT, mature, inactive since 2018)
glParchis (Python, GPL-3.0, mature)
glPortal (C++, zlib, beta)
GLtron (C, ?, beta, inactive since 2017)
Gnome Chess (Vala, GPL-3.0, mature)
Gnome Hearts (Python, GPL-2.0, mature, inactive since 2015)
Gnomescroll (C, C++, Python, GPL-3.0, beta, inactive since 2013)
GNU Chess (C++, GPL-3.0, mature, inactive since 2017)
GNU FreeDink (C, GPL-3.0, mature, inactive since 2012)
GNU Go (C, GPL-3.0, mature, inactive since 2011)
Go Ollie! (?, GPL-3.0, mature, inactive since 2011)
Goblin Camp (C++, GPL-3.0, beta, inactive since 2012)
Goblin Hack (C++, GPL-2.0, beta, inactive since 2009)
GoldenEye: Source (C++, C, GPL-3.0, mature, inactive since 2018)
Golly (C++, Java, GPL-2.0, mature)
Gorc (C++, Apache-2.0, beta)
Gorillas-rs (Rust, MIT, beta)
Gorillas (Objective-C, JavaScript, Java Research License, mature, inactive since 2014)
Gottet (C++, GPL-3.0, mature)
GPL Arcade Volleyball (C++, GPL-2.0, beta, inactive since 2006)
Grabble (Java, ?, mature, inactive since 2006)
Grail (C++, Lua, GPL-3.0, beta, inactive since 2013)
Granatier (C++, GPL-2.0, mature)
Gravitation (C++, Public domain, mature, inactive since 2008)
Greenius' Civil War (C++, GPL-2.0, beta, inactive since 2001)
Greentwip's Harvest Moon (C#, GPL-3.0, beta)
Griefly (C++, Go, Python, MIT, beta)
Grimsonland (JavaScript, TypeScript, MIT, mature, inactive since 2017)
Grobots (C++, GPL-2.0, mature, inactive since 2014)
GUSANOS (C++, GPL-2.0, beta, inactive since 2006)
Gusty's Serpents (C++, GPL-3.0, beta, inactive since 2014)
Gweled (C, GPL-2.0, mature)
GZDoom (C, C++, GPL-3.0, mature)
H-Craft Championship (C++, C, zlib, mature, inactive since 2015)
Hack (C, 3-clause BSD, mature, inactive since 1985)
Hale (Java, GPL-2.0, beta, inactive since 2014)
Hammer of Thyrion (C, GPL-2.0, mature)
Hardwar (C++, GPL-3.0, beta, inactive since 2015)
Harmonist: Dayoriah Clan Infiltration (Go, ISC, beta)
Harris (C, Python, GPL-3.0, beta)
Haxima (C++, GPL-3.0, beta)
Head over Heels (C++, GPL-3.0, mature)
Heart of the Alien (C, GPL-2.0, beta, inactive since 2005)
Hedgewars (Lua, C, C++, Pascal, Haskell, GPL-2.0, mature)
Help Hannah's Horse (C++, GPL-2.0, beta, inactive since 2008)
Hematite (Rust, MIT, beta)
Hero of Allacrost (C++, Lua, GPL-2.0, mature)
Heroes of Civilizations (C++, C#, GPL-2.0, beta)
Heroes of Wesnoth (C++, GPL-3.0, beta, inactive since 2010)
Heroes of Wing Commander (Python, GPL-3.0, beta, inactive since 2014)
Hex Game (C++, MIT, beta)
Hex-a-hop (C++, GPL-2.0, mature, inactive since 2013)
HexGL (JavaScript, CoffeeScript, MIT, mature, inactive since 2016)
heXon (C++, GPL-2.0, beta)
Hexoshi (Python, GPL-3.0, beta, inactive since 2016)
Hextris (JavaScript, GPL-3.0, mature)
Hexwar (Ruby, JavaScript, MIT, beta, inactive since 2012)
HHexen (C, GPL-2.0, mature, inactive since 2013)
Hnefatafl (C, ISC, beta, inactive since 2014)
Hocoslamfy (C, C++, GPL-2.0, beta, inactive since 2016)
HoDoKu (Java, GPL-3.0, mature, inactive since 2013)
Holtz (C++, GPL-2.0, mature)
HolySpirit (C++, GPL-3.0, beta, inactive since 2013)
Hopson-Arcade (C++, GPL-3.0, mature)
HoverRace (C++, Custom, mature, inactive since 2016)
Hovertank3D (C++, Assembly, GPL-2.0, mature, inactive since 2014)
HTML5 Pacman (JavaScript, WTFPL, mature, inactive since 2013)
Hypatia (Python, MIT, beta, inactive since 2016)
Hypercube (Java, GPL-2.0, mature, inactive since 2016)
HyperRogue (C++, GPL-2.0, mature)
I Have No Tomatoes (C++, zlib, mature, inactive since 2004)
ICBM3D (C, ?, beta, inactive since 1998)
Ice Breaker (C, GPL-2.0, mature, inactive since 2003)
Iceball (C, Lua, GPL-3.0, inactive since 2017)
ika (C++, Python, PHP, C#, GPL-2.0, beta, inactive since 2007)
Ilarion (C++, Java, Lua, GPL-3.0, mature)
Imperium (?, ?, mature)
Inexor (C++, JavaScript, zlib, beta, inactive since 2018)
Infiniminer (C#, MIT, mature, inactive since 2016)
Infinite Tux (Java, GPL-3.0, Public domain, mature)
Infon Battle Arena (C, Lua, GPL-2.0, beta, inactive since 2012)
INSTEAD (C, Lua, MIT, mature)
Intricacy (Haskell, GPL-3.0, beta)
IO Reboot (C#, MIT, mature, inactive since 2017)
ioquake3 (C, GPL-2.0, mature)
iortcw (C, C++, GPL-3.0, mature)
Iris2 (C, C++, Lua, GPL-3.0, beta, inactive since 2017)
Iron Seed (Pascal, GPL-3.0, mature, inactive since 2013)
irrlamb (C, C++, GPL-3.0, mature)
Isometric Turn-Based Strategy (Python, MIT, beta)
Isometric-Minesweeper (Python, MIT, beta)
Iter Vehemens ad Necem (C++, GPL-2.0, beta)
Jagged Alliance 2 Stracciatella (C, C++, Custom, mature)
Jake2 (Java, GPL-2.0, beta, inactive since 2006)
Jamp (C++, GPL-3.0, beta, inactive since 2009)
JavaScript Graphic Adventure Maker (JavaScript, MIT, mature)
javascript-E.T. (JavaScript, Assembly, MIT, beta, inactive since 2017)
Javelin (Java, GPL-2.0, mature, inactive since 2016)
Jazz² Resurrection (C#, JavaScript, GPL-3.0, mature)
jClassicRPG (Java, LGPL-3.0, beta, inactive since 2010)
JediAcademyLinux (C++, GPL-2.0, beta, inactive since 2017)
JediOutcastLinux (C, C++, GPL-2.0, mature)
Jet-Story (Assembly, C, C++, MIT, beta)
jewelthief (Java, GPL-3.0, mature, inactive since 2016)
JFDuke3D (C, GPL-2.0, beta, inactive since 2005)
JonoF's Shadow Warrior Port (JFSW) (C, GPL-2.0, beta, inactive since 2005)
JQuest (Java, GPL-2.0, beta, inactive since 2006)
JSettlers (Java, GPL-3.0, mature)
jsFO (JavaScript, Python, Apache-2.0, beta, inactive since 2017)
JSkat (Java, GPL-3.0, Apache-2.0, beta)
JSoko (Java, GPL-3.0, mature)
Julius (C, C++, AGPL-3.0, mature)
Jump'n'Bump (C, GPL-2.0, mature, inactive since 2004)
Just another Tetris™ clone (Java, WTFPL, mature, inactive since 2017)
KaM Remake (Pascal, AGPL-3.0, mature)
Kartering (C, GPL-2.0, MIT, ISC, beta, inactive since 2015)
KAtomic (C++, GPL-2.0, mature)
Keen Dreams (C, Assembly, C++, GPL-2.0, mature, inactive since 2014)
KeeperRL (C, C++, GPL-2.0, beta)
Key Runner (C++, GPL-3.0, mature, inactive since 2013)
KGoldrunner (C++, GPL-2.0, mature)
kiki the nano bot (C++, Public domain, mature, inactive since 2007)
Killer Crates (Java, MIT, beta, inactive since 2017)
Kingdoms (C++, GPL-3.0, beta, inactive since 2014)
KittenMaxit (Java, MIT, beta)
KKnD (C#, GPL-3.0, beta)
Klooni 1010! (Java, GPL-3.0, beta)
KMines (C++, GPL-2.0, mature)
KnightOfWor (Java, GPL-3.0, beta, inactive since 2015)
Knights (C++, GPL-3.0, beta, inactive since 2014)
Kobo Deluxe (C++, GPL-2.0, beta, inactive since 2007)
Kobold's Quest 2 (Python, LGPL-3.0, beta, inactive since 2011)
Korax' Heritage (None, ?, mature)
KQ Lives (C, GPL-2.0, beta, inactive since 2011)
Krank (Python, Public domain, beta, inactive since 2008)
Krystal Drop (C++, GPL-2.0, beta, inactive since 2004)
KSnakeDuel (C++, GPL-2.0, mature)
Ksudoku (C++, GPL-2.0, mature)
Kuklomenos (C++, GPL-3.0, beta, inactive since 2012)
L'Abbaye des Morts (C, GPL-3.0, mature, inactive since 2018)
l-echo (C++, GPL-3.0, beta, inactive since 2016)
Labyrinth of Worlds (C++, LGPL-3.0, beta, inactive since 2010)
ladder (Go, MIT, beta, inactive since 2016)
Ladder (Java, GPL-2.0, mature, inactive since 2005)
LambdaHack (Haskell, 3-clause BSD, beta)
LambdaRogue: The Book of Stars (Pascal, GPL-2.0, mature, inactive since 2012)
Land of Fire (Script, PHP, GPL-2.0, beta)
LastTry (Java, MIT, beta, inactive since 2017)
LBreakout2 (C, GPL-2.0, mature, inactive since 2010)
LBreakoutHD (C++, GPL-3.0, mature)
Lemmings.ts (TypeScript, MIT, mature)
Lemmini (Java, Apache-2.0, beta, inactive since 2017)
LevelHead (C++, Python, GPL-3.0, mature, inactive since 2009)
Lexica (Java, GPL-3.0, mature)
LGames (C++, GPL-2.0, mature)
LGeneral (C, GPL-2.0, mature, inactive since 2017)
Liberal Crime Squad (C++, GPL-2.0, mature, inactive since 2012)
Liberation Circuit (C, GPL-3.0, mature)
Libre Pinball (GDScript, MIT, beta, inactive since 2015)
Librelancer (C, C#, MIT, beta)
Librerama (GDScript, GPL-3.0, mature)
Limbs Off (C++, GPL-3.0, beta, inactive since 2013)
LinCity-NG (C++, GPL-2.0, mature)
Lincity (C, GPL-2.0, mature, inactive since 2005)
Linley's Dungeon Crawl (C, Custom, mature, inactive since 2006)
Linwarrior 3D (C++, Apache-2.0, mature, inactive since 2010)
LionEngine (Java, GPL-3.0, mature)
Lionheart Remake (Java, GPL-3.0, beta, inactive since 2018)
Lips of Suna (C, GPL-3.0, beta, inactive since 2014)
Liquid War (C, GPL-3.0, mature, inactive since 2015)
Lix (D, C++, CC0, beta)
LMarbles (C, GPL-2.0, beta)
Lords of the Fey (JavaScript, AGPL-3.0, beta, inactive since 2018)
LordsAWar! (C++, GPL-3.0, mature)
Lose Your Marbles (JavaScript, MIT, mature, inactive since 2014)
LTris (C, GPL-2.0, mature, inactive since 2013)
lttp-phaser (TypeScript, JavaScript, MIT, beta, inactive since 2016)
Lugaru (C++, GPL-2.0, mature)
Luola (C, GPL-2.0, mature, inactive since 2005)
M.A.R.S. (C++, C, GPL-3.0, beta, inactive since 2016)
M.E.W.L. (C++, GPL-2.0, beta, inactive since 2015)
Machinations (C++, GPL-2.0, beta, inactive since 2003)
Maelstrom (C, C++, GPL-2.0, mature, inactive since 2002)
Magarena (Java, Groovy, GPL-3.0, mature)
MAGE - Matthias Advanced Game Engine (C++, GPL-3.0, beta)
Magic Gardeners Tournament (Python, GPL-2.0, beta, inactive since 2007)
Magical Life (C#, MIT, beta)
Mah-Jong (C, GPL-2.0, mature)
Manic Digger (C#, Public domain, Unlicense, mature, inactive since 2017)
Marble Marcher (C++, GPL-2.0, mature)
Marblez (C#, MIT, beta, inactive since 2017)
Mari0 (Lua, MIT, mature, inactive since 2012)
Mario Objects (C#, MIT, beta)
Mars, Land of No Mercy (C++, GPL-2.0, beta, inactive since 2008)
Maxit (C++, 3-clause BSD, mature, inactive since 2014)
Me and My Shadow (C++, GPL-3.0, beta)
Mechanized Assault & eXploration Reloaded (C++, C, GPL-2.0, beta)
MechCommander 2 Omnitech (C++, MS-PL, beta, inactive since 2013)
Mega Mario (C++, LGPL-2.1, mature, inactive since 2012)
MegaGlest (C, C++, GPL-3.0, mature)
MegaMek (Java, GPL-2.0, mature)
melonJS (JavaScript, MIT, mature)
Memory Game (Java, Apache-2.0, mature)
Mercenary Commander (Java, 3-clause BSD, beta, inactive since 2010)
Meridian 59 (C++, C, GPL-2.0, mature)
Meritous (C, GPL-3.0, mature, inactive since 2008)
Metaforce (C, C++, MIT, beta)
Metal Mech (PHP, GPL-2.0, beta, inactive since 2006)
Mice Men: Remix (Java, LGPL-3.0, mature, inactive since 2016)
Micropolis (C++, Java, Python, GPL-3.0, mature, inactive since 2015)
micropolisJS (JavaScript, GPL-3.0, mature)
Microracers (C, C++, GPL-2.0, beta, inactive since 2005)
MicroWar 2.0 (Python, 3-clause BSD, mature, inactive since 2009)
Mindustry (Java, GPL-3.0, mature)
MineCraft-One-Week-Challenge (C++, C, MIT, beta)
minecraft-weekend (C, MIT, beta)
Mines (Vala, GPL-3.0, mature)
Minesweeper (in C) (C, 3-clause BSD, beta, inactive since 2015)
Minesweeper.Zone (JavaScript, PHP, MIT, mature)
Minetest Game (Lua, LGPL-2.1, mature)
mini2Dx (Java, C#, Apache-2.0, mature)
Minilens (GDScript, GPL-3.0, mature, inactive since 2018)
Minima (Lua, GPL-3.0, mature)
Mininim (C, GPL-3.0, beta, inactive since 2017)
MiniPacman (Ada, GPL-3.0, mature)
Mirror Magic (C, GPL-2.0, mature)
mk.js (JavaScript, MIT, beta)
Mmpong (C, GPL-3.0, beta, inactive since 2009)
Moagg2 (Java, GPL-2.0, mature, inactive since 2008)
Mocha Doom (Java, ?, beta, inactive since 2012)
Monsters and Mushrooms (Python, GPL-2.0, mature, inactive since 2010)
Monstrosity (Python, MIT, mature)
Moon-buggy (C, GPL-2.0, mature, inactive since 2006)
Moonbase Assault (Java, MIT, beta, inactive since 2019)
Moria (C, C++, GPL-3.0, mature)
Morpheus Web Remake (JavaScript, MIT, beta)
movbizz (PHP, JavaScript, MIT, beta, inactive since 2015)
Mpango (Java, JavaScript, GPL-2.0, beta, inactive since 2013)
Mr. Rescue (Lua, zlib, mature, inactive since 2016)
Mr.Boom (C++, C, MIT, mature)
Mrfuze (Python, LGPL-2.1, mature, inactive since 2008)
Mtp Target (C++, GPL-2.0, mature, inactive since 2008)
Murder In The Public Domain (C++, GPL-3.0, mature, inactive since 2013)
MUSoSu (Java, GPL-3.0, beta, inactive since 2008)
n2048 (C, 2-clause BSD, beta, inactive since 2014)
Naev (C, Lua, GPL-3.0, mature)
NBlood (C, C++, Lua, GPL-2.0, mature)
Netacka (C, MIT, mature)
NetHack (C, Custom, mature)
NetMauMau (C++, LGPL-3.0, mature, inactive since 2015)
NetPanzer (C++, GPL-2.0, beta)
Netrek (C, Custom, mature, inactive since 2009)
NetStatsBaseball (C, Public domain, mature)
Neverball (C, C++, GPL-2.0, mature)
Nexuiz (C++, GPL-2.0, mature)
NFSIISE (C, MIT, mature)
Nighthawk (C++, GPL-2.0, mature, inactive since 2004)
Nikki and the Robots (Haskell, LGPL-3.0, mature, inactive since 2012)
Nikwi (C++, GPL-2.0, beta, inactive since 2012)
NLarn (C, Lua, GPL-3.0, mature)
No Gravity (C, GPL-2.0, mature, inactive since 2006)
Noiz2sa (C, C++, 2-clause BSD, beta, inactive since 2004)
Not Pacman (Lua, WTFPL, mature, inactive since 2013)
NOVA PINBALL (Lua, GPL-3.0, beta, inactive since 2017)
Nox Imperii (C, GPL-3.0, mature, inactive since 2016)
NStars! (C#, ?, beta, inactive since 2004)
NullpoMino (Java, 3-clause BSD, mature)
Numpty Physics (C++, GPL-3.0, beta, inactive since 2016)
Nuncabola (Java, GPL-2.0, beta)
Nuvie (C, C++, Lua, GPL-2.0, beta, inactive since 2018)
NXEngine-evo (C++, C, GPL-3.0, mature)
NXEngine (C, C++, GPL-3.0, mature)
nXtank (Python, GPL-3.0, beta, inactive since 2010)
Odamex (C, C++, GPL-2.0, beta)
OGS Mahjong (C++, GPL-3.0, mature, inactive since 2016)
OldSkool Gravity Game (C++, GPL-3.0, mature, inactive since 2016)
Omega (JavaScript, Ruby, AGPL-3.0, beta)
Omnispeak (C, GPL-2.0, mature)
One Hour One Life (C, C++, PHP, Public domain, mature)
One is enough (Python, GPL-2.0, beta, inactive since 2008)
One Way To Go (Lua, GPL-3.0, mature, inactive since 2011)
Online Chess Club (PHP, JavaScript, GPL-2.0, mature)
Oolite (Objective-C, C, JavaScript, GPL-2.0, mature)
Open Apocalypse (C++, MIT, beta)
Open Cube (C++, C, zlib, beta, inactive since 2017)
Open Flood (Java, MIT, mature, inactive since 2018)
Open Fodder (C, C++, GPL-3.0, mature)
Open Fortress (C++, CC-BY-NC-SA-4.0, Custom, beta)
Open Hexagon (C++, AFL-3.0, mature)
Open Horizon (C++, MIT, beta)
Open Imperium Galactica (Java, LGPL-3.0, mature)
Open Jumpgate (C++, GPL-2.0, beta, inactive since 2017)
Open Legend RPG (None, Custom, mature)
Open Meridian (C, C++, GPL-2.0, mature)
Open Panzer (JavaScript, GPL-2.0, mature)
Open Quartz (C, GPL-2.0, beta, inactive since 2004)
Open Rails (C#, GPL-3.0, mature)
Open Rodent's Revenge (C++, MIT, beta, inactive since 2018)
Open RSC (Java, GPL-3.0, mature)
Open Simulator (C#, ?, beta)
Open Soccer Star (PHP, GPL-3.0, beta)
Open Surge (C, GPL-3.0, beta)
Open Syobon Action (C++, ?, beta, inactive since 2011)
Open Tibia (C++, GPL-2.0, beta, inactive since 2014)
Open Yahtzee (C++, GPL-2.0, mature, inactive since 2016)
Open Zelda (C, C++, zlib, mature, inactive since 2015)
openage (C++, Python, GPL-3.0, beta)
OpenAlchemist (C++, GPL-2.0, beta, inactive since 2010)
OpenArena (C, GPL-2.0, mature, inactive since 2012)
openblack (C, C++, GPL-3.0, beta)
OpenBlok (C++, GPL-3.0, beta)
OpenBlox (Python, Lua, GPL-3.0, beta, inactive since 2011)
OpenBOR (C, C++, 3-clause BSD, mature)
OpenBVE (C#, Public domain, mature)
OpenC1 (C#, ?, beta, inactive since 2014)
openc2e (C, C++, LGPL-2.1, beta)
OpenCity (C++, GPL-2.0, beta, inactive since 2015)
OpenClaw (C++, GPL-3.0, mature)
OpenClonk (C, C++, ISC, mature)
OpenCrystalCaves (C++, MIT, beta, inactive since 2017)
OpenDominion (PHP, AGPL-3.0, beta)
openDOW (C, GPL-3.0, beta)
OpenDUNE (C, GPL-2.0, mature)
OpenDungeons (C++, GPL-3.0, beta)
OpenEtG (JavaScript, MIT, beta)
OpenFire (C, MIT, beta, inactive since 2018)
OpenFNaF (C, MIT, beta)
OpenGGS (C++, GPL-2.0, beta, inactive since 2017)
OpenGL Test Drive Remake (C, C++, GPL-3.0, mature, inactive since 2015)
Openglad (C++, GPL-2.0, mature, inactive since 2004)
OpenGothic (C++, MIT, beta)
OpenHoMM (C++, GPL-3.0, beta, inactive since 2010)
OpenHoW (C, C++, GPL-3.0, beta)
OpenHV (C#, Lua, GPL-3.0, beta)
OpenITG (C, C++, MIT, beta, inactive since 2017)
OpenJazz (C++, GPL-2.0, beta)
OpenJK (C, C++, GPL-2.0, beta)
OpenKeeper (Java, GPL-3.0, beta)
OpenLara (C++, C, 2-clause BSD, mature)
OpenLiero (C++, C, Custom, mature, inactive since 2015)
OpenLieroX (C++, LGPL-2.0, mature)
OpenLoco (C++, MIT, mature)
OpenMC2 (C++, GPL-3.0, beta, inactive since 2018)
OpenMoM (C, C++, GPL-3.0, beta)
OpenMOO2 (Python, GPL-2.0, beta, inactive since 2011)
OpenMortal (C++, Perl, GPL-2.0, beta, inactive since 2006)
openMSX (C++, GPL-2.0, mature)
OpenMW for Android (Kotlin, Java, GPL-3.0, mature)
OpenMW (C++, GPL-3.0, mature)
OpenNFS (C, C++, MIT, beta)
OpenNotrium (C++, GPL-3.0, beta)
OpenOMF (C, C++, MIT, beta)
OpenRA (C#, GPL-3.0, mature)
OpenRaider (C, C++, GPL-2.0, beta, inactive since 2015)
OpenRCT2 (C++, GPL-3.0, mature)
OpenRoads (TypeScript, JavaScript, MIT, mature, inactive since 2014)
OpenRTS (Python, GPL-2.0, beta, inactive since 2006)
OpenRW (C, C++, GPL-3.0, beta)
OpenSAGE (C#, LGPL-3.0, beta)
OpenSC2K (JavaScript, GPL-3.0, beta)
OpenSkyscraper (C++, GPL-2.0, beta)
OpenSoccer (PHP, GPL-3.0, beta)
OpenSolomonsKey (C++, Unlicense, beta)
OpenSpades (C, C++, AngelScript, GPL-3.0, beta)
OpenSR (C++, GPL-3.0, beta, inactive since 2017)
OpenSupaplex (C, GPL-3.0, mature)
OpenSWE1R (C, C++, GPL-2.0, beta)
OpenTESArena (C++, MIT, beta)
OpenTitus (C, GPL-3.0, beta, inactive since 2014)
OpenTomb (C, C++, Lua, LGPL-3.0, beta)
OpenTriad (Java, GPL-3.0, beta, inactive since 2017)
OpenTTD (C++, GPL-2.0, mature)
OpenTyrian (C, GPL-2.0, beta, inactive since 2018)
OpenVIII (C#, MIT, beta)
OpenWebSoccer-Sim (PHP, LGPL-3.0, mature)
OpenXcom (C++, GPL-3.0, mature)
OpenYandere (C#, GPL-3.0, beta, inactive since 2018)
Operation Citadel (C++, GPL-2.0, beta, inactive since 2000)
OPMon (C++, GPL-3.0, beta)
Orbit-Hopper (C++, GPL-2.0, mature, inactive since 2019)
Orbium (JavaScript, GPL-2.0, mature, inactive since 2018)
ORIENT (C#, Java, GPL-2.0, mature, inactive since 2009)
orona (CoffeeScript, GPL-2.0, beta, inactive since 2012)
Ostrich Riders (C++, GPL-3.0, beta)
osu! (C#, MIT, beta)
Other-Life (C, C++, Custom, beta)
Our Personal Space (Ren'Py, GPL-3.0, mature)
Outer Space (Python, GPL-2.0, beta)
Outpost HD (C++, 3-clause BSD, beta)
ouzel (C, C++, Objective-C, 2-clause BSD, beta)
Overgod (C, GPL-2.0, mature, inactive since 2005)
Pac Go (Go, MIT, mature)
Pacewar (Python, GPL-3.0, mature, inactive since 2017)
Pachi (C, Python, GPL-2.0, mature)
pacman-canvas (JavaScript, CC-BY-SA-4.0, mature, inactive since 2018)
Pacman (C++, Shell, GPL-2.0, beta)
PainTown (C++, Java, Python, 3-clause BSD, mature)
Palapeli (C++, GPL-2.0, mature)
Panel Attack (Lua, zlib, beta)
Pang Zero (Perl, GPL-2.0, beta, inactive since 2007)
Paper Isaac (ooc, MIT, beta, inactive since 2015)
PARPG (Python, GPL-3.0, beta, inactive since 2012)
PARSEC47 (D, 2-clause BSD, beta, inactive since 2003)
Pasang Emas (Vala, GPL-3.0, mature)
Passage (C++, Public domain, mature, inactive since 2011)
Pathogen Warrior (C++, GPL-2.0, beta, inactive since 2004)
Pathological (Python, GPL-2.0, beta, inactive since 2003)
Pax Britannica (Lua, C, MIT, mature)
PCExhumed (C++, Custom, beta)
Penguin Command (C, GPL-2.0, mature, inactive since 2007)
Pentagram (C++, GPL-2.0, beta, inactive since 2018)
Pentobi (C++, GPL-3.0, mature)
Peragro Tempus (C, C++, GPL-2.0, beta, inactive since 2012)
Performous (C, C++, GPL-2.0, mature)
Phantasy Star Rebirth (C++, GPL-3.0, beta, inactive since 2013)
phpRPG (PHP, GPL-2.0, beta, inactive since 2006)
Physics Platformer (Java, MIT, beta, inactive since 2019)
Physics Spacewar (Java, MIT, beta, inactive since 2019)
Pillows (Python, GPL-2.0, beta, inactive since 2007)
Pingus (C++, GPL-3.0, mature)
Pink Pony (C++, GPL-3.0, mature, inactive since 2017)
Pioneer (C, C++, Lua, Apache-2.0, GPL-3.0, mature)
Pioneers (C, GPL-2.0, mature)
PipePanic (Java, JavaScript, MIT, mature, inactive since 2016)
Pixel Dungeon (Java, GPL-3.0, mature, inactive since 2015)
Pixel Wheels (Java, GPL-3.0, beta)
PixelLight (C, C++, MIT, mature, inactive since 2012)
Pizza Business (C++, GPL-2.0, mature, inactive since 2003)
PlaneShift (C++, GPL-2.0, mature)
Planetary Hoppers (Java, GPL-2.0, beta, inactive since 2003)
Plee the Bear (Lisp, C++, Scheme, C, GPL-3.0, beta, inactive since 2017)
PokerTH (C++, AGPL-3.0, mature, inactive since 2017)
Polis (Java, GPL-3.0, mature, inactive since 2016)
POSTAL 1 Open Source (C++, GPL-2.0, beta, inactive since 2018)
Powermanga (C, GPL-3.0, beta, inactive since 2015)
Powerslave EX (C, C++, GPL-3.0, beta, inactive since 2017)
PowerslaveGDX (Java, Custom, beta)
Powerslide remake (C++, MIT, beta)
pq2 (C++, GPL-3.0, mature)
PrBoom+ (C, GPL-2.0, mature, inactive since 2016)
Prescription Wars (ColdFusion, JavaScript, GPL-3.0, mature, inactive since 2016)
PrimeShooter (JavaScript, GPL-2.0, mature, inactive since 2010)
Primrose (C++, Public domain, mature, inactive since 2009)
Prince-Monogame (C#, GPL-2.0, beta)
Privateer - Gemini Gold (C++, GPL-2.0, mature, inactive since 2012)
progress-quest (C++, Python, MIT, mature)
Project Alexandria (Python, ?, beta, inactive since 2007)
Project Carrot (C++, MIT, beta, inactive since 2017)
Project Dollhouse (C#, MPL-2.0, beta)
Project Helena (Pascal, GPL-3.0, beta)
Project: Starfighter (C, GPL-3.0, mature)
ProQuake 4 (C, GPL-2.0, mature, inactive since 2018)
proxx (TypeScript, JavaScript, Apache-2.0, mature)
PSY PONG 3D (C, GPL-3.0, beta, inactive since 2009)
Pushover (C++, C, Lua, GPL-3.0, beta, inactive since 2018)
PyBreak360 (Python, GPL-3.0, mature, inactive since 2015)
PyChess (Python, TypeScript, GPL-3.0, mature)
pycraft (C, Python, GPL-2.0, mature, inactive since 2018)
Pygame---Alien-Invasion (Python, GPL-3.0, beta, inactive since 2018)
PyKaraoke (Python, LGPL-2.1, beta, inactive since 2011)
pyskool (Python, GPL-3.0, mature)
PySol (Python, GPL-2.0, mature, inactive since 2004)
Python Kye (Python, GPL-2.0, mature, inactive since 2010)
Q-Gears (C, C++, GPL-2.0, beta, inactive since 2015)
Q (Python, GPL-3.0, mature, inactive since 2013)
Qonk (C++, GPL-2.0, beta, inactive since 2008)
Quadrapassel (Vala, GPL-2.0, mature)
Quake3e (C, GPL-2.0, beta)
QuakeJS (JavaScript, MIT, mature)
QuakeSpasm (C, GPL-2.0, mature)
Quartz Engine (C++, 3-clause BSD, beta)
Quatter (C++, GPL-2.0, mature, inactive since 2018)
Rabbit Escape (Java, GPL-2.0, mature)
Race Into Space (C, C++, GPL-2.0, mature)
RacerJS (JavaScript, MIT, mature, inactive since 2010)
Radakan (Python, Custom, beta, inactive since 2014)
Rails: an 18xx game system (Java, GPL-2.0, mature)
Raincat (Haskell, 3-clause BSD, mature, inactive since 2018)
ransack (Python, MIT, mature, inactive since 2016)
RBDOOM-3-BFG (C, C++, GPL-3.0, mature)
Reconstruction of Super ZZT (Pascal, MIT, mature)
Reconstruction of ZZT (Pascal, MIT, mature)
Red Eclipse (C++, zlib, mature)
RedneckGDX (Java, Custom, beta)
Rednukem (C++, Custom, beta)
REDriver2 (C++, C, MIT, beta)
RedShift (C, C++, GPL-2.0, beta, inactive since 2008)
Reflection Keen (C, Lua, GPL-2.0, mature)
REGoth (C++, GPL-3.0, MIT, mature)
Reliquarium (Ada, GPL-2.0, mature)
Remixed Dungeon (Java, GPL-3.0, mature)
Replica Island (Java, Apache-2.0, mature, inactive since 2011)
ReQbert (JavaScript, GPL-3.0, beta)
Rescue! Max (Java, GPL-3.0, beta, inactive since 2013)
ResidualVM (C++, GPL-2.0, beta)
Return of Dr. Destructo (C++, MIT, mature, inactive since 2015)
Return to the Roots (C++, GPL-3.0, mature)
ReTux (Python, GPL-3.0, mature, inactive since 2018)
Ri-li (C++, GPL-3.0, mature, inactive since 2007)
RickyD (C++, GPL-2.0, beta)
Rigel Engine (C++, GPL-2.0, beta)
Rigs of Rods (C, C++, AngelScript, GPL-3.0, mature)
Riiablo (Java, Apache-2.0, beta)
Rise of the Triad for Linux (C, GPL-2.0, mature, inactive since 2012)
rock-raiders-remake (JavaScript, MIT, beta)
Rockbot (C++, GPL-2.0, mature)
Rocks'n'Diamonds (C, GPL-2.0, mature)
Rogue Clone IV (C, 3-clause BSD, mature, inactive since 2006)
RogueBox Adventures (Python, GPL-3.0, mature, inactive since 2017)
Roguish (JavaScript, 3-clause BSD, beta, inactive since 2015)
Room for Change (Java, Apache-2.0, mature, inactive since 2013)
Rot Magus (JavaScript, Apache-2.0, CC0, beta)
Roton (C#, ISC, beta, inactive since 2019)
RPG-X (C, GPL-2.0, mature, inactive since 2015)
rpgboss (Scala, JavaScript, AGPL-3.0, beta, inactive since 2017)
rRootage (C, 2-clause BSD, beta, inactive since 2004)
Ruby-warrior (Ruby, MIT, beta, inactive since 2012)
RufasCube (Ada, GPL-2.0, mature)
RufasSlider (C++, GPL-2.0, mature)
RufasSwap (Ada, GPL-3.0, mature)
RuneLite (Java, 2-clause BSD, mature)
Runfield (JavaScript, GPL-3.0, mature, inactive since 2011)
RuZZT (Rust, MIT, beta)
Ryzom Core (C++, AGPL-3.0, mature)
S.C.O.U.R.G.E. (C++, GPL-2.0, beta, inactive since 2008)
SanAndreasUnity (C#, MIT, mature)
sandspiel (Rust, JavaScript, TypeScript, MIT, beta)
Sarah-Maries Eierjagd (C++, GPL-2.0, mature, inactive since 2005)
Scorched Moon (Python, GPL-3.0, beta)
Scorched3D (C++, GPL-2.0, mature, inactive since 2014)
Scrabble3D (Pascal, GPL-3.0, mature, inactive since 2015)
Scrap (C, C++, GPL-2.0, mature, inactive since 2017)
SDL Asylum (C, GPL-3.0, mature, inactive since 2009)
SDL Bomber (C, GPL-2.0, mature, inactive since 2012)
SDL Sopwith (C, GPL-2.0, mature, inactive since 2014)
SDL-Ball (C++, GPL-3.0, mature, inactive since 2016)
SDLPoP (C, GPL-3.0, mature)
Seafood Berserker! (Java, GPL-3.0, mature, inactive since 2018)
Search for the Red Herring (Python, GPL-2.0, mature, inactive since 2006)
Secret Maryo Chronicles (C++, GPL-3.0, mature, inactive since 2009)
Sengoku: Warring States of Japan (C++, Lua, MIT, beta, inactive since 2008)
sensitive-js (JavaScript, Custom, beta, inactive since 2017)
Sentient Storage (Python, Public domain, mature)
Settlers III remake (Java, MIT, beta)
Seven Kingdoms: Ancient Adversaries (C++, GPL-2.0, mature)
sfall (C++, C, GPL-3.0, mature)
shadow-of-the-beast-html5 (JavaScript, Apache-2.0, beta, inactive since 2017)
Shadowgrounds (C++, Custom, beta, inactive since 2017)
SharpKonquest (C#, GPL-2.0, mature, inactive since 2007)
Shattered Pixel Dungeon (Java, GPL-3.0, mature)
Shockolate (C, GPL-3.0, beta)
Shotgun Debugger (C++, GPL-2.0, mature, inactive since 2005)
Siege of Avalon : Open Source (Pascal, Custom, beta, inactive since 2011)
SilverTree (C++, GPL-3.0, beta, inactive since 2007)
Simitone (C#, MPL-2.0, beta)
Simon Tatham's Portable Puzzle Collection (C, MIT, mature)
Simple Platformer (Java, MIT, beta, inactive since 2019)
Simple Sokoban (C, GPL-3.0, mature, inactive since 2014)
Simple-Solitaire (Java, GPL-3.0, mature)
Simsu (C++, GPL-3.0, mature)
Simutrans (C++, Artistic License-1.0, mature)
Sinatra (C, GPL-3.0, mature, inactive since 2008)
Sine (C, C++, MIT, beta)
Sintel The Game (Python, MIT, beta, inactive since 2014)
Skifree-HTML5-clone (JavaScript, GPL-3.0, beta, inactive since 2011)
skifree.js (JavaScript, MIT, mature, inactive since 2016)
Skrupel - Tribute Compilation (PHP, JavaScript, GPL-2.0, mature, inactive since 2011)
SLASH'EM (C, C++, Custom, beta, inactive since 2007)
Slay (Java, GPL-3.0, beta, inactive since 2010)
Sleep Is Death (C++, ?, mature, inactive since 2018)
Slime Volley (C, GPL-3.0, mature, inactive since 2010)
Slime Volleyball (C++, 3-clause BSD, beta)
Slingshot (Python, GPL-2.0, beta, inactive since 2007)
Slot-Racers (C, C++, GPL-3.0, mature, inactive since 2008)
Sludge (C, C++, Objective-C, LGPL-2.1, mature)
Slune (Python, GPL-2.0, mature, inactive since 2007)
Smash Battle (C++, ?, beta, inactive since 2011)
Smash (JavaScript, MIT, mature)
snake (Java, WTFPL, mature, inactive since 2017)
Snelps (Ruby, LGPL-2.1, beta, inactive since 2012)
Snowballz (Python, ?, beta, inactive since 2007)
Sokoban (CoffeeScript, AGPL-3.0, mature)
SokoSolve (C#, GPL-3.0, mature, inactive since 2009)
SolarWolf (Python, LGPL-2.1, mature, inactive since 2004)
Sole Collector (Java, MIT, beta, inactive since 2018)
Song of Albion (C, C++, Apache-2.0, mature, inactive since 2011)
Sonic Robo Blast 2 (C, C++, GPL-2.0, mature)
Sopwith 3 (C, C++, Objective-C, GPL-2.0, beta, inactive since 2003)
Source of Tales (Lua, GPL-3.0, mature, inactive since 2013)
Sourcehold (C++, MIT, beta)
Space Faring (Java, GPL-3.0, beta)
Space Harrier Clone (C, C++, MIT, beta, inactive since 2018)
Space Nerds In Space (C, Lua, GPL-2.0, beta)
Space Opera (Java, GPL-2.0, beta, inactive since 2008)
Space Station 13 (DM, AGPL-3.0, mature)
Space Trader for Android (Java, GPL-3.0, mature, inactive since 2016)
Space Trader for Windows (C#, GPL-2.0, mature, inactive since 2009)
Space War (Java, Apache-2.0, mature)
SpaceTrader for Java (Java, GPL-2.0, mature, inactive since 2010)
SpaceZero (C, GPL-3.0, beta)
Spartan Engine (C, C++, MIT, beta)
Speed Dreams (C++, GPL-2.0, mature)
Spice Trade (Java, LGPL-2.1, mature, inactive since 2005)
splexhd (C++, GPL-2.0, beta, inactive since 2012)
Spludlow Tetris (C#, GPL-3.0, mature, inactive since 2018)
Spooker Framework (C#, MIT, beta, inactive since 2014)
Spring: 1944 (Lua, GPL-2.0, CC-BY-NC-3.0, mature)
Spring (C++, C, Lua, GPL-2.0, mature)
SS13 Remake (C#, GPL-3.0, beta, inactive since 2015)
Star Maiden Astraea Rio (Ren'Py, MIT, mature)
Star Ruler 2 (C, C++, MIT, mature)
star-control2 (C, C++, MIT, mature)
Star-Wars-III (Python, GPL-2.0, mature, inactive since 2014)
StarBlastrix (C++, GPL-2.0, beta, inactive since 2006)
Stareater (C#, GPL-3.0, beta)
Stargus (C++, Lua, GPL-2.0, beta, inactive since 2010)
Stars! Nova (C#, GPL-2.0, beta)
starshatter-open (C++, 3-clause BSD, beta, inactive since 2015)
Steamer Duck (Python, CC0, beta)
Stendhal (Java, GPL-2.0, mature)
StepMania (C, C++, Lua, MIT, mature)
SteveTech1 (Java, MIT, beta, inactive since 2019)
Story of a Lost Sky (Python, 3-clause BSD, mature)
Stratagus (C++, GPL-2.0, mature)
StressFreeZone (C++, Lua, GPL-3.0, beta, inactive since 2007)
Strife: Veteran Edition (C, C++, Objective-C, GPL-3.0, beta, inactive since 2016)
Stringrolled (Python, Public domain, beta, inactive since 2008)
Stunt Car Racer Remake (C++, Proprietary, beta, inactive since 2012)
Stunt Rally (C, C++, GPL-3.0, mature)
Sudokuki (C, Java, GPL-3.0, mature, inactive since 2016)
Summoning Wars (C, C++, Lua, GPL-3.0, beta, inactive since 2014)
SunDog Resurrection (Java, Python, ?, beta)
sundog (C, C++, Python, MIT, beta)
Supaxl (JavaScript, MIT, mature)
Super Methane Brothers for Wii and GameCube (C++, GPL-2.0, beta, inactive since 2018)
Super Methane Brothers (C++, GPL-2.0, mature, inactive since 2011)
Super Retro Mega Wars (Kotlin, GPL-3.0, beta)
Super Tilt Bro (Assembly, Python, WTFPL, mature)
Super Transball 2 (C++, GPL-2.0, mature, inactive since 2005)
Supercars III (Java, ?, mature, inactive since 2014)
SuperFoulEgg (Objective-C, C, MIT, mature, inactive since 2014)
SuperTux (C++, GPL-3.0, beta)
SuperTuxKart (C++, C, GPL-3.0, mature)
SuperTuxParty (GDScript, GPL-3.0, beta)
Supremacy (C#, MS-RL, beta, inactive since 2014)
Survivor (JavaScript, CC-BY-NC-3.0, mature)
SWP (C, C++, GPL-2.0, mature)
Syndicate Wars Port (C, GPL-3.0, beta, inactive since 2010)
System Syzygy (Rust, GPL-3.0, mature, inactive since 2018)
T-Bots (C, GPL-2.0, beta, inactive since 2004)
T^3 (C++, GPL-2.0, beta, inactive since 2005)
Tactics Squad (C++, GPL-2.0, beta, inactive since 2007)
Taggem (JavaScript, AGPL-3.0, beta, inactive since 2014)
Taisei Project (C, Python, MIT, mature)
Tales of Maj'Eyal (C, Lua, GPL-3.0, mature)
Tanglet (C++, GPL-3.0, mature)
Tangomon (Python, GPL-3.0, mature, inactive since 2017)
Tank: Zone of Death (C++, Lua, GPL-3.0, beta, inactive since 2017)
TankistOnline (Python, GPL-3.0, beta)
Tanks of Freedom (GDScript, MIT, mature)
Tapir (C, Ruby, Apache-2.0, MIT, beta, inactive since 2017)
Team Tactics (Java, MIT, beta, inactive since 2016)
TecnoballZ (C++, GPL-3.0, beta, inactive since 2016)
Teeworlds (C, C++, zlib, beta, inactive since 2013)
TekwarGDX (Java, Custom, beta)
Tenes Empanadas Graciela (C, JavaScript, Perl, GPL-2.0, beta, inactive since 2015)
Tennix! (C, C++, GPL-2.0, mature)
TermFrogger (Ada, GPL-3.0, mature)
TerminalApps (Ada, GPL-3.0, mature)
terrarium (C++, GPL-2.0, beta)
TES3MP (C++, GPL-3.0, beta)
TetraVex (Swift, GPL-3.0, beta)
Tetris (in C and NCURSES) (C, 3-clause BSD, mature)
Tetzle (C++, GPL-3.0, mature)
The Battle for Wesnoth (C, C++, Java, Python, Lua, GPL-2.0, mature)
The Bub's Brothers (Python, MIT, mature, inactive since 2013)
The Butterfly Effect (C++, GPL-2.0, beta)
The Castles of Dr. Creep (C++, Shell, GPL-3.0, mature)
The Clans (C, GPL-2.0, beta, inactive since 2003)
The Dark Mod (C++, GPL-3.0, mature)
The Endless Dungeons (C, CC-BY-NC-SA-2.0, mature, inactive since 2015)
The Epic of Heroes (C++, GPL-3.0, beta, inactive since 2015)
The Eternity Engine (C, C++, GPL-3.0, mature)
The Force Engine (C++, GPL-2.0, beta)
The hunt for the lost rainbow jewels (Jewelhunt) (Java, GPL-2.0, beta)
The Legend of Edgar (C, GPL-2.0, mature)
The Mana World (PHP, C++, GPL-2.0, mature)
The Powder Toy (C++, C, Lua, Python, GPL-3.0, mature)
The Rush (C++, GPL-2.0, beta, inactive since 2011)
The Secret Chronicles of Dr. M. (C++, GPL-3.0, mature)
The Ur-Quan Masters (C, GPL-2.0, mature, inactive since 2011)
The-Trail (Java, MIT, Apache-2.0, beta, inactive since 2018)
Theme Park Builder 3D CAD (C++, GPL-3.0, beta, inactive since 2013)
thiefcatcher (C++, GPL-3.0, beta)
Thrive (C++, AngelScript, JavaScript, C#, GPL-3.0, beta)
Thrust (C, GPL-2.0, beta, inactive since 2006)
Thunder Engine (C++, Apache-2.0, beta)
Thunder&Lightning (C, C++, Io, GPL-2.0, beta, inactive since 2015)
Thyme (C, C++, GPL-2.0, beta)
Tile World (C, GPL-2.0, mature, inactive since 2015)
TinTin++ (C, GPL-3.0, mature)
Tiny Wings (Objective-C, C, C++, MIT, beta)
TOMB5 (C, C++, MIT, beta)
Toppler (C++, GPL-2.0, mature, inactive since 2012)
TORCS, The Open Racing Car Simulator (C++, GPL-2.0, mature, inactive since 2016)
Tornado (C, GPL-2.0, mature, inactive since 2009)
Torrega Race (Lua, GPL-3.0, mature, inactive since 2015)
Total Annihilation 3D (C++, C, Lua, GPL-2.0, beta, inactive since 2017)
TowerJumper (C++, GDScript, GPL-3.0, mature)
Trackballs (C++, Scheme, GPL-2.0, mature)
Train (Java, 3-clause BSD, beta)
Transcend (C++, ?, beta, inactive since 2005)
Transfusion (C, GPL-2.0, beta, inactive since 2007)
Tremfusion (C, GPL-2.0, mature, inactive since 2009)
Tremulous (C, GPL-2.0, mature, inactive since 2016)
Tressette (C++, GPL-2.0, mature, inactive since 2017)
Trigger (C++, GPL-2.0, beta)
Trinity Reign (C++, GPL-3.0, beta, inactive since 2013)
Trip on the Funny Boat (Python, GPL-2.0, mature, inactive since 2007)
TripleA (Java, GPL-2.0, mature)
TROPHY (C++, GPL-2.0, mature, inactive since 2012)
TrueCraft (C#, MIT, beta, inactive since 2018)
Tumbly Towers (Java, MIT, beta, inactive since 2017)
Tumiki Fighters (D, C++, 2-clause BSD, mature, inactive since 2005)
Turious (C, GPL-3.0, beta, inactive since 2014)
Turn of War (Java, GPL-3.0, beta, inactive since 2014)
TurokEX (C++, C, GPL-2.0, beta, inactive since 2014)
TUSSLE (Python, GPL-3.0, mature, inactive since 2017)
Tux Football (C++, GPL-2.0, beta, inactive since 2012)
Tux of Math Command (C, GPL-3.0, mature, inactive since 2011)
Tux Paint (C, C++, GPL-2.0, beta)
Tux Racer (C, GPL-2.0, beta, inactive since 2001)
Tux Rider (C, GPL-2.0, mature, inactive since 2019)
Tuxemon (Python, GPL-3.0, mature)
TuxKart (C++, GPL-2.0, beta, inactive since 2004)
TVTower (BlitzMax, Lua, Custom, mature)
twin-e (C, GPL-2.0, beta, inactive since 2015)
TwinEngine (C, GPL-2.0, mature, inactive since 2015)
Tyger (Python, ?, beta, inactive since 2016)
Tyrian Remake (Java, GPL-2.0, beta)
TyrQuake (C, GPL-2.0, beta)
UA_source (C++, GPL-2.0, beta)
Uebergame (TorqueScript, C#, MIT, mature)
UFO2000 (C, C++, Lua, GPL-2.0, mature, inactive since 2012)
UFO: Alien Invasion (C, C++, GPL-2.0, mature)
Ularn (C, C++, GPL-2.0, mature, inactive since 2018)
UlDunAd (Python, GPL-3.0, beta, inactive since 2011)
Ultima 5 Redux (C#, MIT, beta)
Ultimate Stunts (C++, GPL-2.0, beta, inactive since 2013)
UltraStar Deluxe (Pascal, GPL-2.0, mature)
UltraStar (Pascal, ?, mature, inactive since 2010)
uMario (C++, GPL-2.0, beta, inactive since 2016)
Umbra (Python, Custom, beta, inactive since 2002)
UnCiv (Kotlin, MPL-2.0, beta)
Underworld Adventures (C++, Lua, GPL-2.0, beta)
UnderworldExporter (C#, C++, MIT, mature)
uninvited (C, C++, Artistic License-2.0, beta, inactive since 2016)
unitystation (C#, AGPL-3.0, beta)
Unknown Horizons (Python, GDScript, GPL-2.0, beta)
UnNetHack (C, Custom, mature)
Unvanquished (C, C++, GPL-3.0, mature)
Valyria Tear (Lua, C++, C, GPL-2.0, mature)
Vamos (C++, Python, GPL-3.0, beta, inactive since 2014)
Vanilla-Conquer (C, C++, Assembly, GPL-3.0, mature)
VCMI (C++, GPL-2.0, mature)
VDrift (C++, GPL-3.0, mature, inactive since 2014)
Vector Pinball (Java, GPL-3.0, mature)
Vectoroids (C, GPL-2.0, mature, inactive since 2002)
Vegan on a Desert Island (Lua, GPL-3.0, beta)
Veloren (Rust, GPL-3.0, beta)
Veraball (GDScript, MIT, beta, inactive since 2016)
Vertigo (C, GPL-2.0, beta, inactive since 2002)
Violetland (C++, GPL-3.0, beta)
Visual Pinball (C++, MAME, mature)
vitetris (C, 2-clause BSD, beta)
vkQuake (C, C++, GPL-2.0, mature)
VMS Empire (C, GPL-2.0, mature, inactive since 2014)
Vocaluxe (C#, C++, GPL-3.0, beta, inactive since 2018)
Vorton (C, GPL-3.0, beta, inactive since 2004)
Voxelands (C++, GPL-3.0, beta)
Vulture's Eye (C++, C, NetHack General Public License, mature, inactive since 2015)
VVVVVV (ActionScript, C++, Custom, mature)
WallBall (Haxe, JavaScript, GPL-3.0, mature)
War Of Kingdom (C, C++, GPL-2.0, beta)
War1 (C, zlib, beta)
warcraft-remake (Java, GPL-2.0, beta)
Wargamer (C++, GPL-2.0, mature, inactive since 2003)
Wargus (C++, Lua, C, GPL-2.0, mature)
Wario-Land-3 (Python, MIT, beta, inactive since 2018)
WarMUX (C++, GPL-2.0, beta, inactive since 2018)
Warp Rogue (C, GPL-3.0, beta, inactive since 2010)
Warzone 2100 (C++, GPL-2.0, mature)
Waste's Edge (Python, GPL-2.0, beta)
WAtomic (Pascal, GPL-2.0, mature, inactive since 2005)
WebChess (PHP, GPL-3.0, mature, inactive since 2010)
WebFun (TypeScript, MIT, beta)
WebHangman (JavaScript, GPL-2.0, mature, inactive since 2003)
Which Way Is Up? (Python, GPL-2.0, beta, inactive since 2008)
Widelands (C, C++, Lua, Python, GPL-2.0, mature)
Windstille (C++, Scheme, GPL-3.0, beta, inactive since 2017)
Witch Blast (C++, GPL-3.0, beta, inactive since 2015)
WitchavenGDX (Java, Custom, beta)
Wizardry Legacy (C++, GPL-3.0, beta, inactive since 2018)
Wizards Magic (Python, GPL-2.0, mature, inactive since 2012)
Wizznic! (C, GPL-3.0, beta, inactive since 2016)
wkbre (C++, C, GPL-3.0, beta)
Wograld (C, GPL-2.0, beta)
Wolf3dX (C#, GPL-2.0, beta)
Wolfpack Empire (C, GPL-3.0, mature)
Word War vi (C, GPL-2.0, mature)
World of Heroes (Python, 3-clause BSD, beta, inactive since 2009)
World of Might and Magic (C++, LGPL-3.0, beta)
World of Phaos (PHP, GPL-2.0, mature, inactive since 2011)
WWW (JavaScript, GPL-3.0, beta, inactive since 2014)
Wyrmsun (Lua, C++, GPL-2.0, mature)
X-Force: Fight For Destiny (Pascal, GPL-2.0, beta, inactive since 2011)
X-Moto (C++, GPL-2.0, mature, inactive since 2014)
XArchon (C, C++, GPL-2.0, beta, inactive since 2003)
xBaK (C++, GPL-3.0, beta, inactive since 2013)
XBill (C, GPL-2.0, mature, inactive since 2001)
XBlast (C, GPL-2.0, mature, inactive since 2005)
Xconq (C++, GPL-2.0, mature, inactive since 2005)
xdigger (C, GPL-2.0, mature, inactive since 1999)
xDuke (C, GPL-2.0, beta, inactive since 2010)
Xenowar (C, C++, GPL-3.0, mature, inactive since 2014)
XInvaders 3D (C, GPL-2.0, mature, inactive since 2000)
Xjig (C, Custom, mature)
XMage (Java, MIT, mature)
Xonotic (C, GPL-3.0, mature)
XorCurses (C, GPL-3.0, beta, inactive since 2012)
XPilot NG (C, GPL-2.0, mature, inactive since 2010)
XPilot (C, GPL-2.0, mature, inactive since 2010)
XScavenger (C, GPL-2.0, mature, inactive since 2015)
XSera (C, Lua, MIT, beta, inactive since 2010)
XSkat (Java, Custom, mature)
XSwing Plus (Java, GPL-3.0, beta, inactive since 2010)
xu4 (C++, GPL-2.0, mature, inactive since 2016)
Xultris (JavaScript, XUL, MPL-1.1, mature, inactive since 2011)
Xye (C++, zlib, beta, inactive since 2013)
Yamagi Quake II (C, GPL-2.0, mature)
Yet Another Engine (MoonScript, Java, Lua, MIT, beta, inactive since 2016)
Yo Frankie! (Blender Script, ?, mature, inactive since 2009)
Yorg (Python, GPL-3.0, beta)
YSoccer (Java, GPL-2.0, mature)
ZAngband (C, Custom, mature, inactive since 2005)
Zatacka X (C, GPL-3.0, beta)
Zatacka (C, C++, GPL-2.0, beta, inactive since 2007)
Zauberer (None, ISC, beta, inactive since 2018)
Zaz (C++, GPL-3.0, beta, inactive since 2010)
ZDoom (C, C++, ZenScript, GPL-3.0, mature)
Zed Online (C++, ?, mature)
Zelda Classic (C, C++, GPL-3.0, mature)
Zelda: Mystery of Solarus DX (Lua, GPL-3.0, mature)
Zero Ballistics (C++, MIT, mature, inactive since 2013)
Zero-K (Lua, GPL-2.0, mature)
Zetawar (Clojure, MIT, mature)
Zod Engine (C++, ?, mature, inactive since 2018)
Zone of Control (Rust, Apache-2.0, beta, inactive since 2017)
zorkClone (Java, Apache-2.0, beta)
zztgo (Go, MIT, beta)

95 KiB Raw Blame History

Games

95 KiB

Raw Blame History