Open source games and frameworks

Index by supported platform

Windows (529) Linux (502) macOS (296) Android (150) iOS (21) Web (152) Unspecified (828)

Windows

0 A.D. (beta)
1oom
3DWorld
4D Maze Game (inactive since 2008)
4D-TRIS (inactive since 2012)
Abe's Amazing Adventure (inactive since 2005)
AdaGate
Airstrike (beta, inactive since 2014)
Aleph One
Alex the Allegator 4 (inactive since 2003)
alive (beta)
Ambermoon.net
Ambrose3D (beta, inactive since 2007)
AndEngine (inactive since 2013)
Annex: Conquer the World (inactive since 2014)
AntiChess (beta, inactive since 2003)
Anura
Arcane-Engine (beta)
Ares Dogfighter (beta, inactive since 2016)
AssaultCube (inactive since 2018)
Atomic Tanks (inactive since 2016)
Augustus
Aussenposten (beta, inactive since 2015)
Azimuth
Battle Tanks (inactive since 2009)
Berusky
Biniax (inactive since 2012)
Bitfighter
Black Shades
Blackvoxel
Bladecoder Adventure Engine
Blitwizard (beta, inactive since 2015)
Blobby Volley 2 (inactive since 2017)
Blobwars: Metal Blob Solid
Block Attack - Rise of the Blocks
BlockOut II (inactive since 2014)
BomberClone (beta, inactive since 2010)
Bombermaaan (inactive since 2010)
Brain Workshop (inactive since 2011)
BRIQUOLO (inactive since 2008)
Brogue
Brutal Chess (beta, inactive since 2007)
BStone
BZFlag
C-Dogs SDL
CaesarIA (beta)
Cannon Smash (beta, inactive since 2003)
Canta (beta, inactive since 2011)
Caph (inactive since 2010)
Carnage3D (beta)
Cart Life (inactive since 2014)
Cat Mother Dead Justice (beta, inactive since 2003)
Cataclysm: Dark Days Ahead
CatacombGL (beta)
CaveExpress
CavePacker
Childsplay
Chocolate Doom
Chronoshift (beta)
Chunk Stories (beta)
Circus Linux! (inactive since 2000)
Citybound (beta)
ClanLib
Classic RBDoom 3 BFG
ClassiCube
Clonepoint (beta)
Colditz Escape
Combat Simulator Project (beta, inactive since 2010)
Commander Genius
CoTerminalApps
Crack Attack! (inactive since 2005)
Craft (inactive since 2017)
CrossUO
Cultivation (inactive since 2010)
Curse of War (inactive since 2014)
Cytadela (beta, inactive since 2013)
D2X-XL (inactive since 2015)
Daedalus (inactive since 2018)
Daggerfall Unity
DarkPlaces (inactive since 2014)
Dave Gnukem
Deer Portal (beta)
Defendguin (inactive since 2009)
Destination Sol
dhewm3
Digital: A Love Story
dim3 (beta, inactive since 2014)
DirectX12GameEngine (beta)
Do It Yourself Doom With SDL (beta)
Domination
donut (beta)
Doom Legacy
DOOM Retro
Doom64EX
Doomsday Engine
Dope Wars (inactive since 2013)
DreamChess (beta)
DRL
Duck Marines (inactive since 2016)
Duel Commander (beta, inactive since 2009)
Dune II - The Maker (beta)
Dungeon
Dust Racing 2D
DwarfCorp
DXX-Rebirth
Eat The Whistle (inactive since 2017)
ECWolf
EdisonEngine (beta)
ElonaFoobar
Emilia Pinball (beta)
EmptyEpsilon
Enigma
Escape Towards The Unknown (beta, inactive since 2016)
Esenthel Engine (beta)
ET: Legacy
Etterna (beta)
ezEngine
ezQuake
F-1 Spirit (beta, inactive since 2009)
Falcon's Eye (inactive since 2004)
Falltergeist (beta)
Faur (beta)
FIFE (beta)
Fish Fillets - Next Generation
Fitzquake (beta, inactive since 2009)
FlightGear
FLTK Recycling Game! (inactive since 2014)
FLTrator (inactive since 2016)
Flukz (beta, inactive since 2014)
FooBillard (inactive since 2010)
FooBillard++ (inactive since 2012)
Free Mars
freeablo (beta)
Freedoom (beta)
Freeminer (beta)
FreeSims (beta)
FreeSpace 2 Source Code Project
freeVikings (beta)
Frets on Fire (inactive since 2008)
FTEQW
FunLabyrinthe (inactive since 2012)
GameCake
gamekit (inactive since 2015)
GamePlay (inactive since 2016)
Gang Garrison 2
GCompris
Gilbert and the doors (inactive since 2018)
GL-117 (inactive since 2005)
glParchis
GLtron (beta, inactive since 2017)
GNU Chess (inactive since 2017)
GNU FreeDink (inactive since 2012)
GNU Go (inactive since 2011)
Go Ollie! (inactive since 2011)
Golly
Gottet
GPL Arcade Volleyball (beta, inactive since 2006)
Gravitation (inactive since 2008)
Grobots (inactive since 2014)
GUSANOS (beta, inactive since 2006)
Gusty's Serpents (beta, inactive since 2014)
GZDoom
Hammer of Thyrion
Hardwar (beta, inactive since 2015)
Harmonist: Dayoriah Clan Infiltration (beta)
Head over Heels
Heart of the Alien (beta, inactive since 2005)
Hedgewars
Help Hannah's Horse (beta, inactive since 2008)
Hexoshi (beta, inactive since 2016)
HGE (beta, inactive since 2013)
HoDoKu (inactive since 2013)
Holtz
HoverRace (inactive since 2016)
HyperRogue
I Have No Tomatoes (inactive since 2004)
Ice Breaker (inactive since 2003)

iiChantra (beta, inactive since 2012)
ika (beta, inactive since 2007)
Inexor (beta, inactive since 2018)
Infinite Mario Bros (inactive since 2010)
Infinite Tux
Infon Battle Arena (beta, inactive since 2012)
INSTEAD
Intersect (beta)
Intricacy (beta)
ioquake3
iortcw
irrlamb
Jake2 (beta, inactive since 2006)
Jamp (beta, inactive since 2009)
Javelin (inactive since 2016)
Jazz² Resurrection
JGame (inactive since 2012)
JonoF's Shadow Warrior Port (JFSW) (beta, inactive since 2005)
JSkat (beta)
JSoko
Jump Don't Die
Jump'n'Bump (inactive since 2004)
KeeperRL (beta)
Key Runner (inactive since 2013)
kiki the nano bot (inactive since 2007)
Killer Crates (beta, inactive since 2017)
KlayGE
Knights (beta, inactive since 2014)
Kobo Deluxe (beta, inactive since 2007)
Krank (beta, inactive since 2008)
L'Abbaye des Morts (inactive since 2018)
LambdaHack (beta)
LambdaRogue: The Book of Stars (inactive since 2012)
LGames
Liberal Crime Squad (inactive since 2012)
Librelancer (beta)
LibreMines
LimonEngine (beta)
LionEngine
Lugaru
Luola (inactive since 2005)
Maelstrom (inactive since 2002)
MafiaUnity (beta, inactive since 2020)
MAGE - Matthias Advanced Game Engine (beta)
Magical Life (beta)
ManaPlus
Manic Digger (inactive since 2017)
Marble Marcher
Mari0 (inactive since 2012)
Maxit (inactive since 2014)
Me and My Shadow (beta)
Mega Mario (inactive since 2012)
MekWars
Metaforce (beta)
MicroWar 2.0 (inactive since 2009)
Mindustry
mini2Dx
Minilens (inactive since 2018)
Mininim (beta, inactive since 2017)
MiniPacman
Moagg2 (inactive since 2008)
Monofoxe
Monsterz (beta, inactive since 2007)
Moonbase Assault (beta, inactive since 2019)
Mr. Rescue (inactive since 2016)
Murder In The Public Domain (inactive since 2013)
neoGFX (beta)
NetMauMau (inactive since 2015)
Netrek (inactive since 2009)
Neverball
Nexuiz
NFSIISE
Nikwi (beta, inactive since 2012)
No Gravity (inactive since 2006)
Noiz2sa (beta, inactive since 2004)
Not Pacman (inactive since 2013)
NOVA PINBALL (beta, inactive since 2017)
NStars! (beta, inactive since 2004)
NullpoMino
Numpty Physics (beta, inactive since 2016)
nXtank (beta, inactive since 2010)
OGS Mahjong (inactive since 2016)
OldSkool Gravity Game (inactive since 2016)
ONScripter (inactive since 2020)
Oolite
Open Fodder
Open Horizon (beta)
Open Kick-Off (beta)
Open Quartz (beta, inactive since 2004)
Open Rodent's Revenge (beta, inactive since 2018)
Open RSC
Open Yahtzee (inactive since 2016)
OpenAlchemist (beta, inactive since 2010)
OpenArena (inactive since 2012)
openblack (beta)
OpenBlok (beta)
OpenBlox (beta, inactive since 2011)
OpenBVE
OpenClonk
OpenDiablo2
OpenDungeons (beta)
OpenGothic (beta)
OpenHoW (beta)
OpenHV (beta)
OpenJazz (beta)
OpenJK (beta)
OpenKrush (beta)
OpenLara
OpenLieroX
OpenLoco
OpenMortal (beta, inactive since 2006)
openMSX
OpenOMF (beta)
OpenRCT2
OpenRW (beta)
OpenSAGE (beta)
OpenSolomonsKey (beta)
OpenSpades (beta)
OpenSupaplex
OpenTESArena (beta)
OpenTomb (beta)
OpenTyrian (beta, inactive since 2018)
OpenVIII (beta)
OPMon (beta)
Oreon Engine
osu! (beta)
ouzel (beta)
Overgod (inactive since 2005)
Pacewar (inactive since 2017)
Pachi
PainTown
PARSEC47 (beta, inactive since 2003)
Passage (inactive since 2011)
Penguin Command (inactive since 2007)
Pentagram (beta, inactive since 2018)
Performous
Physics Platformer (beta, inactive since 2019)
Physics Spacewar (beta, inactive since 2019)
Pillows (beta, inactive since 2007)
Pingus
Pink Pony (inactive since 2017)
PipeWalker (beta, inactive since 2012)
Pixel Dungeon (inactive since 2015)
Pixel Wheels (beta)
PixelLight (inactive since 2012)
Planet Rider (inactive since 2015)
PokerTH (inactive since 2017)
Powerslave EX (beta, inactive since 2017)
Powerslide remake (beta)
Primrose (inactive since 2009)
Privateer - Gemini Gold (inactive since 2012)
Project-Uranium-Godot (beta)
Project: Starfighter
Puzzle Moppet (inactive since 2015)
PyChess
Pygame---Alien-Invasion (beta, inactive since 2018)
PyKaraoke (beta, inactive since 2011)
PySol (inactive since 2004)
Q (inactive since 2013)
QuakeSpasm
Rabbit Escape
Race Into Space
Recursive Runner (beta, inactive since 2017)
Reliquarium
remc2
ResidualVM (beta)
ReTux (inactive since 2018)
Ri-li (inactive since 2007)
Rigs of Rods
Rocks'n'Diamonds
RogueBox Adventures (inactive since 2017)
Rott94 (beta)
RPG-X (inactive since 2015)
rpgboss (beta, inactive since 2017)
rRootage (beta, inactive since 2004)
Ruby-warrior (beta, inactive since 2012)

RufasCube
RufasSlider
RufasSwap
SanAndreasUnity
Scorched3D (inactive since 2014)
Scrabble3D (inactive since 2015)
Settlers III remake (beta)
Seven Kingdoms: Ancient Adversaries
Shattered Pixel Dungeon
Shockolate (beta)
Shotgun Debugger (inactive since 2005)
Simon Tatham's Portable Puzzle Collection
Simple Platformer (beta, inactive since 2019)
Simsu
Slime Volley (inactive since 2010)
Slingshot (beta, inactive since 2007)
Sludge
Smash Battle (beta, inactive since 2011)
Snelps (beta, inactive since 2012)
SokoSolve (inactive since 2009)
SolarWolf (inactive since 2004)
Sole Collector (beta, inactive since 2018)
Sonic Robo Blast 2
Space Harrier Clone (beta, inactive since 2018)
SpacePeng! (inactive since 2017)
SpaceTrader for Java (inactive since 2010)
Spartan Engine (beta)
Spice Trade (inactive since 2005)
StarBlastrix (beta, inactive since 2006)
Stareater (beta)
StepMania
SteveTech1 (beta, inactive since 2019)
Stratagus
Stunt Rally
Sudokuki (inactive since 2016)
Super Bombinhas
Super Methane Brothers (inactive since 2011)
SuperTux (beta)
SuperTuxKart
SuperTuxParty (beta)
System Syzygy (inactive since 2018)
T^3 (beta, inactive since 2005)
Tactics Squad (beta, inactive since 2007)
Taisei Project
Tangomon (inactive since 2017)
TankistOnline (beta)
Tanks of Freedom
Team Tactics (beta, inactive since 2016)
Teeworlds (beta, inactive since 2013)
TermFrogger
TerminalApps
TES3MP (beta)
Tetrepetete
The Battle for Wesnoth
The Bub's Brothers (inactive since 2013)
The Butterfly Effect (beta)
The Dark Mod
The Endless Dungeons (inactive since 2015)
The Eternity Engine
The Legend of Edgar
The Powder Toy
The Secret Chronicles of Dr. M.
Thrive (beta)
Thrust (beta, inactive since 2006)
TinTin++
Toppler (inactive since 2012)
TORCS, The Open Racing Car Simulator (inactive since 2016)
Torque 2D
Torque 3D
Total Annihilation 3D (beta, inactive since 2017)
Transcend (beta, inactive since 2005)
Tremulous (inactive since 2016)
Tressette (inactive since 2017)
Trigger (beta)
Trip on the Funny Boat (inactive since 2007)
TROPHY (inactive since 2012)
Tumbly Towers (beta, inactive since 2017)
Tumiki Fighters (inactive since 2005)
TUSSLE (inactive since 2017)
Tux Builder (beta)
Tux Football (beta, inactive since 2012)
Tux Paint (beta)
Tuxemon (beta)
UAlbion (beta)
Uebergame
Ultimate Stunts (beta, inactive since 2013)
UltraStar Deluxe
UltraStar Play (beta)
Umoria
UnCiv (beta)
unitystation (beta)
Unvanquished
Vanilla-Conquer
VDrift (inactive since 2014)
Vectoroids (inactive since 2002)
Veraball (beta, inactive since 2016)
Violetland (beta)
Visual Pinball
vitetris (beta)
vkQuake
Vocaluxe (beta, inactive since 2018)
Vorton (beta, inactive since 2004)
Voxelands (beta)
Wagic, the Homebrew (beta)
warcraft-remake (beta)
Which Way Is Up? (beta, inactive since 2008)
Wizardry Legacy (beta, inactive since 2018)
X-Moto (inactive since 2014)
XBlast (inactive since 2005)
Xenowar (inactive since 2014)
XPilot (inactive since 2010)
XPilot NG (inactive since 2010)
XSkat
Yamagi Quake II
Yet Another Engine (beta, inactive since 2016)
Yo Frankie! (inactive since 2009)
YSoccer
Zandronum (inactive since 2017)
Zatacka (beta, inactive since 2007)
Zaz (beta, inactive since 2010)
ZDoom
Zelda Classic
Zero Ballistics (inactive since 2013)
ZGB
Zod Engine (inactive since 2018)
Armory
Cartographer
Crystal Space 3D SDK (inactive since 2015)
D-Fend Reloaded (inactive since 2015)
DeSmuME (inactive since 2015)
DirectPython (beta, inactive since 2007)
EasyRPG Editor
Flare
flixel-gdx (beta, inactive since 2017)
Game Editor (inactive since 2014)
GBDK
GeonBit.UI
Gideros
GoRogue
HaxePunk
KevEdit
LIKO-12
Loon Game (beta)
Love2dCS
LÖVE
Mafia: Toolkit
ManiaDrive (inactive since 2008)
Minetest
Nazara Engine (beta)
ncurses
Open Game Engine (beta, inactive since 2008)
opsu!
Overload
PGU
PLIB (inactive since 2012)
Procedural Map Generator (inactive since 2018)
Psyco (inactive since 2008)
pyscroll (inactive since 2018)
PyTMX
raylib
Ren'Py
ReShade
rFXGen
Rolisteam
Sanity Engine (beta)
Scrolling Game Development Kit 2 (inactive since 2017)
sfxr (inactive since 2012)
SLADE
Slick2D (beta, inactive since 2014)
SoftPixel Engine (inactive since 2013)
Storm Engine
SuperStarfighter (beta)
TTDPatch (inactive since 2013)
VASSAL
VQEngine (beta)
World Builder (inactive since 2007)

Linux

0 A.D. (beta)
1oom
3D Pong (beta, inactive since 2004)
4D Maze Game (inactive since 2008)
4D-TRIS (inactive since 2012)
Abe's Amazing Adventure (inactive since 2005)
Abuse (inactive since 2011)
AdaGate
Afternoon Stalker (inactive since 2012)
Airstrike (beta, inactive since 2014)
Aisleriot
Aleph One
Alex the Allegator 4 (inactive since 2003)
alive (beta)
Ambermoon.net
AndEngine (inactive since 2013)
Annex: Conquer the World (inactive since 2014)
AntiChess (beta, inactive since 2003)
Ares Dogfighter (beta, inactive since 2016)
AssaultCube (inactive since 2018)
Atomic Tanks (inactive since 2016)
Augustus
Aussenposten (beta, inactive since 2015)
Azimuth
Balder2D (beta, inactive since 2009)
Ball and Paddle (beta, inactive since 2009)
Batrachians (beta, inactive since 2012)
Battle Tanks (inactive since 2009)
Berusky
Between (beta, inactive since 2010)
Billiards (beta, inactive since 2012)
Biniax (inactive since 2012)
Bitfighter
Black Shades
Blackvoxel
Bladecoder Adventure Engine
Blitwizard (beta, inactive since 2015)
Blobby Volley 2 (inactive since 2017)
Block Attack - Rise of the Blocks
BlockOut II (inactive since 2014)
BomberClone (beta, inactive since 2010)
Bombermaaan (inactive since 2010)
Bombic (beta, inactive since 2005)
Brain Workshop (inactive since 2011)
Brikx (beta, inactive since 2009)
BRIQUOLO (inactive since 2008)
Brogue
Brutal Chess (beta, inactive since 2007)
BurgerSpace (inactive since 2013)
BZFlag
C-Dogs SDL
CaesarIA (beta)
Cannon Smash (beta, inactive since 2003)
Canta (beta, inactive since 2011)
Caph (inactive since 2010)
Carnage3D (beta)
Cart Life (inactive since 2014)
Cataclysm: Dark Days Ahead
CaveExpress
CavePacker
CETech (beta)
Childsplay
Chocolate Doom
Chrzaszcz (beta, inactive since 2018)
Chunk Stories (beta)
Citybound (beta)
ClanLib
Classic RBDoom 3 BFG
ClassiCube
Clonepoint (beta)
Colditz Escape
Commander Genius
Cosmosmash (inactive since 2013)
CoTerminalApps
Crack Attack! (inactive since 2005)
Craft (inactive since 2017)
CrossUO
Crown (beta)
Cultivation (inactive since 2010)
Curse of War (inactive since 2014)
Cuyo (inactive since 2014)
Cytadela (beta, inactive since 2013)
D2X-XL (inactive since 2015)
Daggerfall Unity
DarkPlaces (inactive since 2014)
Dave Gnukem
Deer Portal (beta)
Defendguin (inactive since 2009)
Destination Sol
dhewm3
Digital: A Love Story
dim3 (beta, inactive since 2014)
Domination
donut (beta)
DOOM (inactive since 2012)
Doom Legacy
Doomsday Engine
Dope Wars (inactive since 2013)
DreamChess (beta)
DRL
Duck Marines (inactive since 2016)
Duel Commander (beta, inactive since 2009)
Dungeon
Dust Racing 2D
DwarfCorp
DXX-Rebirth
Eat The Whistle (inactive since 2017)
ECWolf
EdisonEngine (beta)
ElonaFoobar
Elysium Engine (beta, inactive since 2006)
Emilia Pinball (beta)
Empty Clip
EmptyEpsilon
Enigma
Esenthel Engine (beta)
ET: Legacy
ezEngine
ezQuake
F-1 Spirit (beta, inactive since 2009)
Falcon's Eye (inactive since 2004)
Falltergeist (beta)
Faur (beta)
Fish Fillets - Next Generation
FLTK Recycling Game! (inactive since 2014)
Flukz (beta, inactive since 2014)
FooBillard (inactive since 2010)
FooBillard++ (inactive since 2012)
Free Mars
freeablo (beta)
FreeBlocks (beta, inactive since 2015)
Freedoom (beta)
Freeminer (beta)
Freenukum (beta, inactive since 2009)
FreeSpace 2 Source Code Project
Frets on Fire (inactive since 2008)
Friking Shark
Frozen Bubble (inactive since 2012)
FTEQW
GameCake
gamekit (inactive since 2015)
GamePlay (inactive since 2016)
GCompris
Gem Drop X (beta, inactive since 2002)
Gilbert and the doors (inactive since 2018)
GL-117 (inactive since 2005)
glParchis
GLtron (beta, inactive since 2017)
Gnome Chess
GNU Chess (inactive since 2017)
GNU FreeDink (inactive since 2012)
GNU Go (inactive since 2011)
Go Ollie! (inactive since 2011)
Golly
Gottet
GPL Arcade Volleyball (beta, inactive since 2006)
Grail (beta, inactive since 2013)
Gravitation (inactive since 2008)
Grobots (inactive since 2014)
GUSANOS (beta, inactive since 2006)
Gweled
GZDoom
Hammer of Thyrion
Hardwar (beta, inactive since 2015)
Harmonist: Dayoriah Clan Infiltration (beta)
Head over Heels
Hedgewars
Help Hannah's Horse (beta, inactive since 2008)

heXon (beta)
Hexoshi (beta, inactive since 2016)
HHexen (inactive since 2013)
HoDoKu (inactive since 2013)
Holtz
Hopson-Arcade
HyperRogue
I Have No Tomatoes (inactive since 2004)
Ice Breaker (inactive since 2003)
iiChantra (beta, inactive since 2012)
Inexor (beta, inactive since 2018)
Infinite Mario Bros (inactive since 2010)
Infinite Tux
Infon Battle Arena (beta, inactive since 2012)
INSTEAD
Intersect (beta)
Intricacy (beta)
ioquake3
iortcw
Jake2 (beta, inactive since 2006)
Jamp (beta, inactive since 2009)
Javelin (inactive since 2016)
Jazz² Resurrection
JGame (inactive since 2012)
JSkat (beta)
JSoko
Jump Don't Die
Key Runner (inactive since 2013)
Killer Crates (beta, inactive since 2017)
Kingdoms (beta, inactive since 2014)
KlayGE
KMines
Kobo Deluxe (beta, inactive since 2007)
Krank (beta, inactive since 2008)
Krystal Drop (beta, inactive since 2004)
KungFoo Barracuda (inactive since 2016)
L'Abbaye des Morts (inactive since 2018)
LambdaHack (beta)
LambdaRogue: The Book of Stars (inactive since 2012)
LBreakout2 (inactive since 2010)
LBreakoutHD
LevelHead (inactive since 2009)
LGames
Liberal Crime Squad (inactive since 2012)
Librelancer (beta)
LibreMines
LimonEngine (beta)
LionEngine
Liquid War (inactive since 2015)
Lugaru
Luola (inactive since 2005)
Maelstrom (inactive since 2002)
ManaPlus
Marble Marcher
Mari0 (inactive since 2012)
Maxit (inactive since 2014)
Me and My Shadow (beta)
MekWars
Metaforce (beta)
Mindustry
Mines
mini2Dx
Minilens (inactive since 2018)
Mininim (beta, inactive since 2017)
MiniPacman
Moagg2 (inactive since 2008)
Monsterz (beta, inactive since 2007)
Moonbase Assault (beta, inactive since 2019)
Mr. Rescue (inactive since 2016)
Murder In The Public Domain (inactive since 2013)
n2048 (beta, inactive since 2014)
neoGFX (beta)
NetMauMau (inactive since 2015)
Netrek (inactive since 2009)
NFSIISE
Nikwi (beta, inactive since 2012)
No Gravity (inactive since 2006)
Noiz2sa (beta, inactive since 2004)
Not Pacman (inactive since 2013)
NOVA PINBALL (beta, inactive since 2017)
NullpoMino
Numpty Physics (beta, inactive since 2016)
OGS Mahjong (inactive since 2016)
OldSkool Gravity Game (inactive since 2016)
ONScripter (inactive since 2020)
Oolite
Open Fodder
Open Horizon (beta)
Open Kick-Off (beta)
Open Quartz (beta, inactive since 2004)
Open Rodent's Revenge (beta, inactive since 2018)
Open RSC
Open Yahtzee (inactive since 2016)
OpenAlchemist (beta, inactive since 2010)
OpenArena (inactive since 2012)
openblack (beta)
OpenBlok (beta)
OpenBlox (beta, inactive since 2011)
OpenBVE
OpenClonk
OpenDiablo2
OpenDungeons (beta)
OpenHoW (beta)
OpenHV (beta)
OpenITG (beta, inactive since 2017)
OpenKrush (beta)
OpenLara
OpenMortal (beta, inactive since 2006)
OpenOMF (beta)
OpenRCT2
OpenRW (beta)
OpenSAGE (beta)
OpenSolomonsKey (beta)
OpenSupaplex
OpenTESArena (beta)
OpenVIII (beta)
OPMon (beta)
Oreon Engine
ouzel (beta)
Overgod (inactive since 2005)
Pacewar (inactive since 2017)
Pachi
PainTown
Pang Zero (beta, inactive since 2007)
PARSEC47 (beta, inactive since 2003)
Pasang Emas
Passage (inactive since 2011)
Penguin Command (inactive since 2007)
Pentagram (beta, inactive since 2018)
Performous
Physics Platformer (beta, inactive since 2019)
Physics Spacewar (beta, inactive since 2019)
Pillows (beta, inactive since 2007)
Pingus
Pink Pony (inactive since 2017)
Pixel Dungeon (inactive since 2015)
Pixel Wheels (beta)
PixelLight (inactive since 2012)
Planet Rider (inactive since 2015)
PokerTH (inactive since 2017)
Powermanga (beta, inactive since 2015)
Powerslave EX (beta, inactive since 2017)
Powerslide remake (beta)
Primrose (inactive since 2009)
Privateer - Gemini Gold (inactive since 2012)
Project-Uranium-Godot (beta)
Project: Starfighter
Puzzle Moppet (inactive since 2015)
PyChess
Pygame---Alien-Invasion (beta, inactive since 2018)
PyKaraoke (beta, inactive since 2011)
pyskool
PySol (inactive since 2004)
Q (inactive since 2013)
QuakeSpasm
Rabbit Escape
Race Into Space
Recursive Runner (beta, inactive since 2017)
Reliquarium
ReTux (inactive since 2018)
Ri-li (inactive since 2007)
Rocks'n'Diamonds
RogueBox Adventures (inactive since 2017)
RPG-X (inactive since 2015)
rpgboss (beta, inactive since 2017)
rRootage (beta, inactive since 2004)
Ruby-warrior (beta, inactive since 2012)

RufasCube
RufasSlider
RufasSwap
SanAndreasUnity
Scorched3D (inactive since 2014)
Scrabble3D (inactive since 2015)
SDL Asylum (inactive since 2009)
SDL Bomber (inactive since 2012)
SDL Sopwith (inactive since 2014)
SDL-Ball (inactive since 2016)
Settlers III remake (beta)
Seven Kingdoms: Ancient Adversaries
Shattered Pixel Dungeon
Shockolate (beta)
Shotgun Debugger (inactive since 2005)
Simon Tatham's Portable Puzzle Collection
Simple Platformer (beta, inactive since 2019)
Simsu
Slime Volley (inactive since 2010)
Slingshot (beta, inactive since 2007)
Sludge
Smash Battle (beta, inactive since 2011)
Snelps (beta, inactive since 2012)
SokoSolve (inactive since 2009)
SolarWolf (inactive since 2004)
Sole Collector (beta, inactive since 2018)
Sonic Robo Blast 2
Space Nerds In Space (beta)
SpacePeng! (inactive since 2017)
SpaceTrader for Java (inactive since 2010)
SpaceZero (beta)
Spice Trade (inactive since 2005)
Stareater (beta)
SteveTech1 (beta, inactive since 2019)
Stratagus
Stunt Rally
Sudokuki (inactive since 2016)
sundog (beta)
Super Bombinhas
Super Methane Brothers (inactive since 2011)
SuperTux (beta)
SuperTuxKart
SuperTuxParty (beta)
System Syzygy (inactive since 2018)
T^3 (beta, inactive since 2005)
Tactics Squad (beta, inactive since 2007)
Taisei Project
Tangomon (inactive since 2017)
TankistOnline (beta)
Tanks of Freedom
Team Tactics (beta, inactive since 2016)
Teeworlds (beta, inactive since 2013)
Tenes Empanadas Graciela (beta, inactive since 2015)
TermFrogger
TerminalApps
TES3MP (beta)
The Battle for Wesnoth
The Bub's Brothers (inactive since 2013)
The Butterfly Effect (beta)
The Dark Mod
The Eternity Engine
The Legend of Edgar
The Powder Toy
The Secret Chronicles of Dr. M.
Thrive (beta)
Thrust (beta, inactive since 2006)
TinTin++
Toppler (inactive since 2012)
TORCS, The Open Racing Car Simulator (inactive since 2016)
Torque 2D
Torque 3D
Total Annihilation 3D (beta, inactive since 2017)
Trackballs
Transcend (beta, inactive since 2005)
Tremulous (inactive since 2016)
Trigger (beta)
Trip on the Funny Boat (inactive since 2007)
TROPHY (inactive since 2012)
Tumbly Towers (beta, inactive since 2017)
Tumiki Fighters (inactive since 2005)
TUSSLE (inactive since 2017)
Tux Builder (beta)
Tux Football (beta, inactive since 2012)
Tux of Math Command (inactive since 2011)
Tux Paint (beta)
Tuxemon (beta)
TuxKart (beta, inactive since 2004)
Ultimate Stunts (beta, inactive since 2013)
UltraStar Deluxe
UltraStar Play (beta)
Umoria
UnCiv (beta)
unitystation (beta)
Unvanquished
Vamos (beta, inactive since 2014)
Vanilla-Conquer
VDrift (inactive since 2014)
Vectoroids (inactive since 2002)
Veraball (beta, inactive since 2016)
Vertigo (beta, inactive since 2002)
Violetland (beta)
vitetris (beta)
vkQuake
Vocaluxe (beta, inactive since 2018)
Vorton (beta, inactive since 2004)
Voxelands (beta)
Wagic, the Homebrew (beta)
warcraft-remake (beta)
Which Way Is Up? (beta, inactive since 2008)
Wizardry Legacy (beta, inactive since 2018)
Word War vi
X-Moto (inactive since 2014)
xBaK (beta, inactive since 2013)
XBill (inactive since 2001)
XBlast (inactive since 2005)
xdigger (inactive since 1999)
XorCurses (beta, inactive since 2012)
XPilot (inactive since 2010)
XPilot NG (inactive since 2010)
XSkat
Yamagi Quake II
Yet Another Engine (beta, inactive since 2016)
Yo Frankie! (inactive since 2009)
YSoccer
Zandronum (inactive since 2017)
Zatacka (beta, inactive since 2007)
Zaz (beta, inactive since 2010)
ZDoom
Zod Engine (inactive since 2018)
Zugspiel (beta, inactive since 2004)
Armory
Athenaeum (beta)
Cartographer
Crystal Space 3D SDK (inactive since 2015)
curses (inactive since 2000)
DeSmuME (inactive since 2015)
EasyRPG Editor
Flare
flixel-gdx (beta, inactive since 2017)
Free Hero Mesh (beta)
Game Editor (inactive since 2014)
GBDK
GeonBit.UI
Gideros
HaxePunk
KevEdit
LIKO-12
Loon Game (beta)
Love2dCS
LÖVE
ManiaDrive (inactive since 2008)
Minetest
Nazara Engine (beta)
ncurses
opsu!
PGU
PLIB (inactive since 2012)
Psyco (inactive since 2008)
pyscroll (inactive since 2018)
PyTMX
raylib
Ren'Py
Rolisteam
Slick2D (beta, inactive since 2014)
SoftPixel Engine (inactive since 2013)
SuperStarfighter (beta)
VASSAL

macOS

0 A.D. (beta)
3D Pong (beta, inactive since 2004)
4D Maze Game (inactive since 2008)
4D-TRIS (inactive since 2012)
Abe's Amazing Adventure (inactive since 2005)
AdaGate
Aleph One
Alex the Allegator 4 (inactive since 2003)
Ambermoon.net
AntiChess (beta, inactive since 2003)
AssaultCube (inactive since 2018)
Augustus
Azimuth
Battle Tanks (inactive since 2009)
Biniax (inactive since 2012)
Bitfighter
Black Shades
Bladecoder Adventure Engine
Blitwizard (beta, inactive since 2015)
Blobby Volley 2 (inactive since 2017)
Bombic (beta, inactive since 2005)
Brain Workshop (inactive since 2011)
Brogue
BZFlag
C-Dogs SDL
CaesarIA (beta)
Cataclysm: Dark Days Ahead
CaveExpress
CETech (beta)
Chocolate Doom
Chunk Stories (beta)
Circus Linux! (inactive since 2000)
Citybound (beta)
ClassiCube
Colditz Escape
CoTerminalApps
Craft (inactive since 2017)
CrossUO
Cultivation (inactive since 2010)
Cytadela (beta, inactive since 2013)
D2X-XL (inactive since 2015)
Daggerfall Unity
DarkPlaces (inactive since 2014)
Dave Gnukem
Destination Sol
dhewm3
Digital: A Love Story
dim3 (beta, inactive since 2014)
Domination
Doom Legacy
Doom64EX
Doomsday Engine
DreamChess (beta)
DRL
Duck Marines (inactive since 2016)
Dungeon
DwarfCorp
Eat The Whistle (inactive since 2017)
ECWolf
ElonaFoobar
Emilia Pinball (beta)
Enigma
Escape Towards The Unknown (beta, inactive since 2016)
Esenthel Engine (beta)
ET: Legacy
Etterna (beta)
ezEngine
ezQuake
F-1 Spirit (beta, inactive since 2009)
Fish Fillets - Next Generation
FlightGear
FLTK Recycling Game! (inactive since 2014)
Free Mars
freeablo (beta)
Freedoom (beta)
FreeSpace 2 Source Code Project
Frets on Fire (inactive since 2008)
Frozen Bubble (inactive since 2012)
FTEQW
GameCake
gamekit (inactive since 2015)
GamePlay (inactive since 2016)
GCompris
Gem Drop X (beta, inactive since 2002)
GL-117 (inactive since 2005)
GLtron (beta, inactive since 2017)
GNU Chess (inactive since 2017)
GNU FreeDink (inactive since 2012)
GNU Go (inactive since 2011)
Golly
Gottet
GPL Arcade Volleyball (beta, inactive since 2006)
Gravitation (inactive since 2008)
Grobots (inactive since 2014)
GZDoom
Hammer of Thyrion
Hardwar (beta, inactive since 2015)
Harmonist: Dayoriah Clan Infiltration (beta)
HoDoKu (inactive since 2013)

HyperRogue
I Have No Tomatoes (inactive since 2004)
Infinite Mario Bros (inactive since 2010)
Infinite Tux
INSTEAD
Intersect (beta)
Intricacy (beta)
ioquake3
iortcw
Jamp (beta, inactive since 2009)
Javelin (inactive since 2016)
Jazz² Resurrection
JGame (inactive since 2012)
JSoko
Jump Don't Die
kiki the nano bot (inactive since 2007)
KlayGE
Kobo Deluxe (beta, inactive since 2007)
Krank (beta, inactive since 2008)
LGames
LimonEngine (beta)
LionEngine
Lugaru
Luola (inactive since 2005)
Maelstrom (inactive since 2002)
ManaPlus
Mari0 (inactive since 2012)
Maxit (inactive since 2014)
Me and My Shadow (beta)
MekWars
Metaforce (beta)
MicroWar 2.0 (inactive since 2009)
mini2Dx
Minilens (inactive since 2018)
MiniPacman
Monsterz (beta, inactive since 2007)
Mr. Rescue (inactive since 2016)
Netrek (inactive since 2009)
Neverball
Not Pacman (inactive since 2013)
NOVA PINBALL (beta, inactive since 2017)
NullpoMino
Numpty Physics (beta, inactive since 2016)
ONScripter (inactive since 2020)
Oolite
Open Horizon (beta)
Open Kick-Off (beta)
Open Rodent's Revenge (beta, inactive since 2018)
Open RSC
OpenArena (inactive since 2012)
OpenBVE
OpenDiablo2
OpenHV (beta)
OpenJazz (beta)
OpenKrush (beta)
OpenLara
OpenLoco
OpenMortal (beta, inactive since 2006)
openMSX
OpenRaider (beta, inactive since 2015)
OpenRCT2
OpenRW (beta)
OpenSAGE (beta)
OpenSpades (beta)
OpenSupaplex
OpenTESArena (beta)
OPMon (beta)
Oreon Engine
osu! (beta)
ouzel (beta)
Overgod (inactive since 2005)
PainTown
Passage (inactive since 2011)
Penguin Command (inactive since 2007)
Pentagram (beta, inactive since 2018)
Performous
Pillows (beta, inactive since 2007)
Pingus
Pixel Dungeon (inactive since 2015)
Pixel Wheels (beta)
PokerTH (inactive since 2017)
Powerslave EX (beta, inactive since 2017)
Primrose (inactive since 2009)
Privateer - Gemini Gold (inactive since 2012)
Project-Uranium-Godot (beta)
Puzzle Moppet (inactive since 2015)
Pygame---Alien-Invasion (beta, inactive since 2018)
PyKaraoke (beta, inactive since 2011)
PySol (inactive since 2004)
Q (inactive since 2013)
QuakeSpasm
Rabbit Escape
Race Into Space
Recursive Runner (beta, inactive since 2017)
Reliquarium
ResidualVM (beta)
Ri-li (inactive since 2007)
Rocks'n'Diamonds
rpgboss (beta, inactive since 2017)

Ruby-warrior (beta, inactive since 2012)
RufasCube
RufasSlider
RufasSwap
Scrabble3D (inactive since 2015)
Settlers III remake (beta)
Shattered Pixel Dungeon
Shockolate (beta)
Shotgun Debugger (inactive since 2005)
Simon Tatham's Portable Puzzle Collection
Simsu
Slime Volley (inactive since 2010)
Slingshot (beta, inactive since 2007)
Sludge
Snelps (beta, inactive since 2012)
SolarWolf (inactive since 2004)
Sonic Robo Blast 2
SpacePeng! (inactive since 2017)
SpaceTrader for Java (inactive since 2010)
Spice Trade (inactive since 2005)
Stareater (beta)
Stratagus
SuperFoulEgg (inactive since 2014)
SuperTux (beta)
SuperTuxKart
SuperTuxParty (beta)
System Syzygy (inactive since 2018)
Taisei Project
TankistOnline (beta)
Tanks of Freedom
Teeworlds (beta, inactive since 2013)
TermFrogger
TerminalApps
TES3MP (beta)
TetraVex (beta)
The Battle for Wesnoth
The Bub's Brothers (inactive since 2013)
The Butterfly Effect (beta)
The Eternity Engine
The Powder Toy
TinTin++
Tiny Wings (beta)
Torque 2D
Torque 3D
Total Annihilation 3D (beta, inactive since 2017)
Transcend (beta, inactive since 2005)
Tremulous (inactive since 2016)
Tux Builder (beta)
Tux Paint (beta)
Tuxemon (beta)
Ultimate Stunts (beta, inactive since 2013)
UltraStar Deluxe
UltraStar Play (beta)
Umoria
UnCiv (beta)
unitystation (beta)
Unvanquished
VDrift (inactive since 2014)
vkQuake
Wagic, the Homebrew (beta)
Word War vi
X-Moto (inactive since 2014)
XPilot NG (inactive since 2010)
XSkat
Yet Another Engine (beta, inactive since 2016)
Yo Frankie! (inactive since 2009)
YSoccer
Zandronum (inactive since 2017)
Zaz (beta, inactive since 2010)
ZDoom
Armory
Cartographer
Crystal Space 3D SDK (inactive since 2015)
DeSmuME (inactive since 2015)
Flare
flixel-gdx (beta, inactive since 2017)
Game Editor (inactive since 2014)
GBDK
Gideros
HaxePunk
KevEdit
LIKO-12
Loon Game (beta)
Love2dCS
LÖVE
Minetest
opsu!
PGU
PLIB (inactive since 2012)
pyscroll (inactive since 2018)
PyTMX
raylib
Ren'Py
Rolisteam
sfxr (inactive since 2012)
SLADE
SuperStarfighter (beta)
VASSAL

Android

Andor's Trail (beta)
android-chess
antiyoy (beta)
Anuto
Apple Flinger
Battleround (beta, inactive since 2015)
Beat Feet
Biniax (inactive since 2012)
Bladecoder Adventure Engine
Blitwizard (beta, inactive since 2015)
Block Puzzle Stone Wars
BobBall (inactive since 2017)
Candy Memory (inactive since 2018)
Catan Dice Game
CaveExpress
ClassiCube
Commander Genius
Critical Velocity (inactive since 2017)
Crosswords
Defendo (inactive since 2018)
DemiGod (beta, inactive since 2013)
Destination Sol
Dodge (inactive since 2012)
Domination
DroidZebra (inactive since 2015)
Dungeon Hero
Dungeon Quest
ECWolf
EliFUT Android
EmptyEpsilon
Enchanted Fortress
Esenthel Engine (beta)
EternalWinterWars (beta, inactive since 2014)
ezEngine
Fire Strike Retro
Fish Rings for Android (inactive since 2015)
Flappy Cow
FreeBlocks (beta, inactive since 2015)
Freebloks 3D for Android
Freeminer (beta)
Frozen Bubble (inactive since 2012)
FTEQW
gamekit (inactive since 2015)
GamePlay (inactive since 2016)
GCompris
GL TRON (inactive since 2012)
Gloomy Dungeons (inactive since 2018)
Gloomy Dungeons 2
GLXY
Golly

Gravity Defied (inactive since 2015)
HyperRogue
INSTEAD
Isolmoa (inactive since 2014)
Ithaka Board Game
Jazz² Resurrection
jewelthief (inactive since 2016)
KittenMaxit (beta)
Klooni 1010! (beta)
KungFoo Barracuda (inactive since 2016)
Lexica
LGeneral (inactive since 2017)
LionEngine
Liquid Wars (inactive since 2014)
Lona
Memory Game
Mercenary Commander (beta, inactive since 2010)
Mighty Knight (inactive since 2018)
Mindustry
Minilens (inactive since 2018)
Minos
noiz2-droid (inactive since 2015)
NOVA PINBALL (beta, inactive since 2017)
ONScripter (inactive since 2020)
Open Flood (inactive since 2018)
Open RSC
OpenLara
openMSX
OpenMW for Android
osu! (beta)
ouzel (beta)
PainTown
PaperCraft (inactive since 2018)
PianOli
PipePanic (inactive since 2016)
Pixel Dungeon (inactive since 2015)
Pixel Wheels (beta)
Planet Conquest (inactive since 2017)
Planet Rider (inactive since 2015)
Playir (inactive since 2014)
Point & Hit (inactive since 2017)
PokerTH (inactive since 2017)
Poland can into Space (inactive since 2018)
Powerslide remake (beta)
Rabbit Escape
RaumBaller
Recursive Runner (beta, inactive since 2017)
Remixed Dungeon
Replica Island (inactive since 2011)
Retro Stack

Rocks'n'Diamonds
Rott94 (beta)
SanAndreasUnity
Seafood Berserker! (inactive since 2018)
Settlers III remake (beta)
Shattered Pixel Dungeon
Simon Tatham's Portable Puzzle Collection
Simple Brick Games (inactive since 2017)
Simple-Solitaire
Sokoban
Space Trader for Android (inactive since 2016)
SpacePeng! (inactive since 2017)
Starun (inactive since 2017)
Super Retro Mega Wars (beta)
SuperTuxKart
Tanks of Freedom
Taponium (inactive since 2019)
Tetrepetete
The Battle for Wesnoth
The Knights of Alentejo (beta)
The Powder Toy
Thugaim (inactive since 2017)
TinTin++
TowerJumper
Tttris (inactive since 2012)
Turn of War (beta, inactive since 2014)
Turo (inactive since 2018)
Tux Memory (inactive since 2014)
Tux Paint (beta)
Tux Rider (inactive since 2019)
Tuxemon (beta)
UltraStar Play (beta)
UnCiv (beta)
Vector Pinball
Virus Attack
Wagic, the Homebrew (beta)
warcraft-remake (beta)
Xenowar (inactive since 2014)
XSkat
Yet Another Engine (beta, inactive since 2016)
Zen!
flixel-gdx (beta, inactive since 2017)
Gideros
HaxePunk
LIKO-12
LÖVE
Minetest
opsu!
raylib
Ren'Py

iOS

DOOM-iOS (inactive since 2012)
Esenthel Engine (beta)
GamePlay (inactive since 2016)
Gorillas (inactive since 2014)
Hedgewars
NOVA PINBALL (beta, inactive since 2017)
OpenLara

osu! (beta)
ouzel (beta)
Playir (inactive since 2014)
Shattered Pixel Dungeon
Simon Tatham's Portable Puzzle Collection
The Battle for Wesnoth
Tux Paint (beta)

Wagic, the Homebrew (beta)
Yet Another Engine (beta, inactive since 2016)
flixel-gdx (beta, inactive since 2017)
Game Editor (inactive since 2014)
HaxePunk
LÖVE
Ren'Py

Web

2048
3d.city (inactive since 2016)
Achtung, die Kurve!
Ajax3d (beta, inactive since 2007)
Alien Assault Traders (beta, inactive since 2009)
Allure of the Stars (beta)
Ancient Beast
aquastax (beta)
Arashi-JS (beta, inactive since 2010)
Armor Alley (beta)
asdf
Backbone Game Engine (beta, inactive since 2016)
Ball And Wall (inactive since 2015)
Betrayer's Moon Tactics (beta, inactive since 2006)
BlackNova Traders (beta, inactive since 2012)
BlakedAwesomenaughts (beta, inactive since 2015)
boardgame.io (beta)
Bobby
Boohu (beta)
British Bingo
BrowserQuest
Candy Box 2 (inactive since 2013)
Card Stories (beta, inactive since 2012)
Castle of the Winds (beta, inactive since 2016)
Castle of the Winds in Elm (beta)
Cattle Bity
CaveExpress
cc94 (beta)
Chess3D (inactive since 2016)
Children of Ur (beta)
Chroma
Clumsy Bird (inactive since 2017)
CommandoJS (beta, inactive since 2012)
Consomaton (inactive since 2016)
CrappyBird (inactive since 2017)
Cross The Road
CrystalQuest (inactive since 2017)
Dark Destiny (inactive since 2016)
DarkCity (inactive since 2012)
Delaford (beta)
Devana (beta)
diablo-js
Enduro tribute
EPOH (beta)
Esenthel Engine (beta)
Evil Cult
Executive Man (inactive since 2017)
Faur (beta)
Fluid Table Tennis (inactive since 2013)
Freeciv-web
Gift Grabber

gist-txt (inactive since 2018)
GNU FreeDink (inactive since 2012)
Grimsonland (inactive since 2017)
Harmonist: Dayoriah Clan Infiltration (beta)
Heroine Dusk (inactive since 2017)
HexGL (inactive since 2016)
Hextris
Hexwar (beta, inactive since 2012)
HTML5 Pacman (inactive since 2013)
Isogenic Game Engine
JavaScript Graphic Adventure Maker
javascript-E.T. (beta, inactive since 2017)
Jazz² Resurrection
jsFO (beta, inactive since 2017)
Kai ‘Opua (inactive since 2013)
Kiwi.js (inactive since 2015)
LambdaHack (beta)
Land of Fire (beta)
LBA2 Remake (beta)
Lemmings.ts
Lords of the Fey (beta, inactive since 2018)
Lose Your Marbles (inactive since 2014)
lttp-phaser (beta, inactive since 2016)
melonJS
Metal Mech (beta, inactive since 2006)
micropolisJS
Minesweeper.Zone
Minilens (inactive since 2018)
mk.js (beta)
Morpheus Web Remake (beta)
movbizz (beta, inactive since 2015)
Omega (beta)
One Hour One Life
Online Chess Club
Open Panzer
Open Soccer Star (beta)
OpenDominion (beta)
OpenEtG (beta)
OpenLara
OpenRoads (inactive since 2014)
OpenSC2K (beta)
OpenSoccer (beta)
OpenWebSoccer-Sim
Orbium (inactive since 2018)
orona (beta, inactive since 2012)
ouzel (beta)
pacman-canvas (inactive since 2018)
phpRPG (beta, inactive since 2006)
Playir (inactive since 2014)
Prescription Wars (inactive since 2016)
PrimeShooter (inactive since 2010)

proxx
QuakeJS
RacerJS (inactive since 2010)
ReQbert (beta)
rock-raiders-remake (beta)
Roguish (beta, inactive since 2015)
Rot Magus (beta)
Runfield (inactive since 2011)
sandspiel (beta)
sensitive-js (beta, inactive since 2017)
shadow-of-the-beast-html5 (beta, inactive since 2017)
Skifree-HTML5-clone (beta, inactive since 2011)
skifree.js (inactive since 2016)
Skrupel - Tribute Compilation (inactive since 2011)
Smash
Smolpxl
Sokoban
Sootl (beta, inactive since 2016)
StarMines: The Next Generation
Supaxl
Super Tilt Bro
Survivor
Taggem (beta, inactive since 2014)
Taisei Project
The House (inactive since 2019)
The Mana World
WallBall
WebChess (inactive since 2010)
WebFun (beta)
WebHangman (inactive since 2003)
World of Phaos (inactive since 2011)
WWW (beta, inactive since 2014)
Xultris (inactive since 2011)
Zetawar
2Moons Browsergame Engine
Dedalus (beta, inactive since 2018)
F.LF
Fantasy Map Generator
flixel-gdx (beta, inactive since 2017)
Floppy Birb
HaxePunk
JiGS Interactive Game System (beta)
Pendumito (inactive since 2003)
Phaser
raylib
Ren'Py
Squiffy
Superpowers
Twine
Undum (inactive since 2018)

Unspecified

2006-rebotted
2048 Python
2H4U (inactive since 2007)
3Dc (inactive since 2000)
54321 (inactive since 2001)
A Planet's Revenge (beta, inactive since 2008)
A7Xpg (beta, inactive since 2005)
Abuse 1996 (inactive since 2016)
ACM (inactive since 2000)
AdaDoom3 (beta)
Adanaxis (inactive since 2007)
AdaVenture
Advanced Strategic Command
adventure engine (inactive since 2013)
AI Wars (beta, inactive since 2010)
Aklabeth (inactive since 2004)
Alimer (beta)
Amphetamine (beta, inactive since 2008)
Anagramarama (beta, inactive since 2002)
Anarch
Angband
Angry Birds in Python (inactive since 2017)
Antares (beta)
Anteform (beta)
Apricots (beta, inactive since 2003)
Ardentryst (inactive since 2009)
Argentum Online (beta, inactive since 2014)
Armagetron Advanced
Armies (inactive since 2007)
Arrakis (inactive since 2000)
Artillery Duel Reloaded (beta, inactive since 2012)
Arx Libertatis
AstroMenace
ativayeban (inactive since 2015)
Atomiks (inactive since 2015)
Atomix
Atrinik (inactive since 2016)
Attal: Lords of doom (inactive since 2008)
Avanor (beta, inactive since 2008)
Awkaster (inactive since 2017)
BAB BE U
Bacon2D (beta, inactive since 2018)
Ballerburg SDL
Barony
Bastet (beta, inactive since 2018)
Batalla Naval (inactive since 2002)
Battery (inactive since 2009)
Battle City (inactive since 2013)
Battlefield Java (beta, inactive since 2011)
Battles of Antargis (beta, inactive since 2014)
Beat Harvester (beta, inactive since 2009)
Berusky II (beta)
BetterSpades (beta)
Biogenesis (beta)
Birth of the Empires (inactive since 2016)
BitRiot (beta, inactive since 2017)
Black Shades Elite (beta, inactive since 2007)
Blasphemer (inactive since 2017)
Blinken
Blitzkrieg (beta, inactive since 2012)
Blob Wars : Attrition
Blob Wars Episode 2 : Blob And Conquer (inactive since 2016)
Bloboats (inactive since 2006)
Bloodmasters (inactive since 2008)
Bombic2 (beta, inactive since 2010)
Bombman
BOOM: Remake
Bos Wars (inactive since 2013)
Boson (beta, inactive since 2006)
Boulder Dash (inactive since 2015)
Bouncy the Hungry Rabbit (inactive since 2007)
bratwurst (inactive since 2009)
Breakout-VR (beta, inactive since 2017)
Bridge Command
buggyGame (beta, inactive since 2007)
Bygfoot (beta)
C-evo (inactive since 2013)
C3DE (beta)
c64-nuclearreaction (inactive since 2014)
Cabbages and Kings
Cadaver (beta, inactive since 2009)
Cafu Engine (beta, inactive since 2018)
Cannonball (beta)
Castle-Combat (beta, inactive since 2006)
Cataclysm (beta, inactive since 2012)
Catacomb (inactive since 1989)
Catacomb 3-D (inactive since 1991)
CatacombSDL (inactive since 2014)
Catch Challenger
CAVEZ of PHEAR (beta, inactive since 2011)
CCCP (beta)
Celestron (beta, inactive since 2012)
chainreaction (inactive since 2017)
Chaos Esque Anthology
Chocolate Duke3D (beta, inactive since 2016)
Choria
Chromium B.S.U.
Civil (beta, inactive since 2003)
Civilization: Call To Power 2 Source Project
Civitas (beta, inactive since 2017)
CivOne (beta)
Classic Blades of Exile
ClassicUO (beta)
Colobot: Gold Edition
Colonization too (beta, inactive since 2004)
Colossal Cave Adventure
Columns
Command Series Engine
CommonDrops (beta, inactive since 2018)
Conquest
Conquests (inactive since 2012)
Construo (beta, inactive since 2015)
Core War
CorEngine (beta, inactive since 2015)
CorsixTH
Cosmo-Engine (beta)
Cosmore
Creep Smash (beta, inactive since 2011)
Crimson Fields (inactive since 2010)
Critterding (beta, inactive since 2013)
Crossfire
Crown and Cutlass (beta, inactive since 2009)
Cubosphere (beta)
CuteMaze
Cytopia (beta)
Daimonin
Danger from the Deep (beta, inactive since 2011)
Dark Oberon (inactive since 2009)
Data Storm (inactive since 2017)
Dawn (beta, inactive since 2011)
Deathchase 3D (inactive since 2002)
Decker (beta, inactive since 2013)
Deliantra
DelverEngine
Der Clou! (beta, inactive since 2017)
DesktopAdventures (beta)
Devilution
DevilutionX
DGEngine (beta)
Diablerie (beta)
Diabolika
Digbuild (beta, inactive since 2011)
Digger Remastered (inactive since 2004)
Dingo-Engine (beta, inactive since 2016)
Divercity (beta, inactive since 2015)
Dmomd
DNT (beta, inactive since 2016)
Domino On Acid (inactive since 2009)
doukutsu-rs (beta)
Dragon History - Dračí Historie (inactive since 2010)
Dragon Hunt
dRally (beta)
DreamZZT (beta, inactive since 2007)
Dreerally (beta)
Duality
Duckmaze (beta)
DUGA (beta, inactive since 2018)
Duke3D (beta, inactive since 2009)
Duke3d_w32 (beta, inactive since 2008)
DukeGDX (beta)
Dune Dynasty (inactive since 2014)
Dune Legacy
Dungeon Craft
Dungeon Crawl Stone Soup
Dungeon Eye (beta, inactive since 2016)
Dungeon Monkey Eternal (inactive since 2016)
Dungeon Monkey Unlimited (inactive since 2010)
Dunnet (inactive since 1992)
DynaDungeons (beta, inactive since 2018)
eAdventure (inactive since 2014)
Eboard
Ecksdee (beta, inactive since 2009)
EDuke32
Egoboo (inactive since 2015)
Einstein Puzzle (inactive since 2005)
Endgame: Singularity (beta)
Endless Sky
engge (beta)
EnTT Pacman
Eos, Dawn of Light: A Space Opera (beta, inactive since 2007)
Epiar (beta)
erampage (beta, inactive since 2015)
Erebus (beta)
Eternal Lands
Excellent Bifurcation (inactive since 2007)
Extreme Tux Racer (beta, inactive since 2018)
Exult
Fairy-Max (inactive since 2018)
Fall of Imiryn (beta, inactive since 2009)
Fallen Spire (beta, inactive since 2009)
Falling Time
Fanwor
FAR Colony (beta, inactive since 2014)
Fictional Air Combat (beta, inactive since 2012)
First Strike (inactive since 2018)
Flex Engine (beta)
fonline (beta)
Forge
Forsaken (beta, inactive since 2013)
Foursies (inactive since 2016)
FQuake3 (beta, inactive since 2014)
fRaBs (inactive since 2016)
Fractal Engine
Free Allegiance
Free Heroes 2 (beta, inactive since 2015)
Free in the Dark (engine) (beta)
Free Space Colonization (beta, inactive since 2017)
Free Tennis (beta, inactive since 2005)
freeaoe (beta)
Freeciv
Freeciv Alpha Centauri project (beta, inactive since 2003)
FreeCol
FreeCS
FreedroidRPG
FreeFalcon (inactive since 2014)
freegish (beta, inactive since 2017)
Freekick 3 (inactive since 2015)
FreeLords (beta, inactive since 2017)
FreeOrion (beta)
FreePrince (beta, inactive since 2011)
FreeRails (beta, inactive since 2008)
FreeRCT (beta, inactive since 2016)
Freeserf
Freeserf.net
FreeSiege (beta)
FreeSO (beta)
Freestars (beta, inactive since 2008)
FreeSynd (beta, inactive since 2017)
FreeTrain (beta, inactive since 2009)
Frets on Fire X
Freya Game Engine (beta, inactive since 2002)
Froggix (beta, inactive since 2009)
Fujo (inactive since 2014)
Galaxy Forces V2
GalaxyMage Redux (beta, inactive since 2011)
GalaxyNG (inactive since 2005)
GameLV (beta)
Garith (inactive since 2013)
GDash (beta)
GDHexGrid
GearHead
GearHead 2 (beta)
Gee Whiz (beta, inactive since 2004)
ges-code
Ghostly (inactive since 2016)
Gigalomania
GJID (inactive since 2017)
Glest (inactive since 2009)
Globulation 2
glPortal (beta)
GLSpeed
Gnome Hearts (inactive since 2015)
Gnomescroll (beta, inactive since 2013)
GNU Shogi (inactive since 2018)
Goblin Camp (beta, inactive since 2012)
Goblin Hack (beta, inactive since 2009)
Godot Card Game Framework
GoldenEye: Source (inactive since 2018)
Gorc (beta)
Gorillas-rs (beta)
Granatier
Greenius' Civil War (beta, inactive since 2001)
Greentwip's Harvest Moon (beta)
Griefly (beta)
H-Craft Championship (inactive since 2015)
Hack (inactive since 1985)
Hale (beta, inactive since 2014)
Harris (beta)
Hase (beta)
Haxima (beta)
Hematite (beta)
Hero of Allacrost
Heroes of Civilizations (beta)
Heroes of Wesnoth (beta, inactive since 2010)
Heroes of Wing Commander (beta, inactive since 2014)
Hex Game (beta)

Hex-a-hop (inactive since 2013)
Hnefatafl (beta, inactive since 2014)
Hocoslamfy (beta, inactive since 2016)
HolySpirit (beta, inactive since 2013)
Hovertank3D (inactive since 2014)
Hypatia (beta, inactive since 2016)
Hypercube (inactive since 2016)
ICBM3D (beta, inactive since 1998)
Iceball (inactive since 2017)
Ilarion
Illarion
IMaze (inactive since 2001)
Imperium
Infiniminer (inactive since 2016)
Innocence Engine (beta)
IO Reboot (inactive since 2017)
Iris2 (beta, inactive since 2017)
Ironseed (inactive since 2013)
Isleward
Isometric Turn-Based Strategy (beta)
Isometric-Minesweeper (beta)
Iter Vehemens ad Necem (beta)
Jactorio (beta)
Jagged Alliance 2 Stracciatella
jClassicRPG (beta, inactive since 2010)
JediAcademyLinux (beta, inactive since 2017)
JediOutcastLinux
Jet-Story (beta)
JFDuke3D (beta, inactive since 2005)
JQuest (beta, inactive since 2006)
JSettlers
Julius
Just another Tetris™ clone (inactive since 2017)
KaM Remake
Kartering (beta, inactive since 2015)
KAtomic
Keen Dreams (inactive since 2014)
KGoldrunner
KnightOfWor (beta, inactive since 2015)
Kobold's Quest 2 (beta, inactive since 2011)
Korax' Heritage
KQ Lives (beta, inactive since 2011)
KRaptor (beta, inactive since 2004)
KSnakeDuel
Ksudoku
Kuklomenos (beta, inactive since 2012)
l-echo (beta, inactive since 2016)
Labyrinth of Worlds (beta, inactive since 2010)
ladder (beta, inactive since 2016)
Ladder (inactive since 2005)
LastTry (beta, inactive since 2017)
Lemmini (beta, inactive since 2017)
Liberation Circuit
Libre Pinball (beta, inactive since 2015)
LibreQuake (beta)
Librerama
LieroLibre (inactive since 2017)
Limbs Off (beta, inactive since 2013)
Lincity (inactive since 2005)
LinCity-NG
Linley's Dungeon Crawl (inactive since 2006)
Linwarrior 3D (inactive since 2010)
Lionheart Remake (beta, inactive since 2018)
Lips of Suna (beta, inactive since 2014)
Lix (beta)
LMarbles (beta)
LordsAWar!
LTris (inactive since 2013)
M.A.R.S. (beta, inactive since 2016)
M.E.W.L. (beta, inactive since 2015)
Machinations (beta, inactive since 2003)
Magarena
Magic Gardeners Tournament (beta, inactive since 2007)
Mah-Jong
Marblez (beta, inactive since 2017)
Mario Objects (beta)
Mars, Land of No Mercy (beta, inactive since 2008)
mc2 (beta)
Mechanized Assault & eXploration Reloaded (beta)
MechCommander 2 Omnitech (beta, inactive since 2013)
MegaGlest
MegaMek
Meridian 59
Meritous (inactive since 2008)
Mice Men: Remix (inactive since 2016)
Micropolis (inactive since 2015)
Microracers (beta, inactive since 2005)
MineClone 2 (beta)
MineCraft-One-Week-Challenge (beta)
minecraft-weekend (beta)
Minesweeper (in C) (beta, inactive since 2015)
minesweeper-rs
Minetest Game
Minima
Mirror Magic
Mmpong (beta, inactive since 2009)
Mocha Doom (beta, inactive since 2012)
Monsters and Mushrooms (inactive since 2010)
Monstrosity
Moon-buggy (inactive since 2006)
Mop(e)snake (beta, inactive since 2009)
MoveNoid (inactive since 2017)
Mpango (beta, inactive since 2013)
Mr.Boom
Mrfuze (inactive since 2008)
Mtp Target (inactive since 2008)
MUSoSu (beta, inactive since 2008)
MxEngine
Naev
NBlood
NeoLemmix (beta)
Netacka
NetHack
NetPanzer (beta)
NetStatsBaseball
Nighthawk (inactive since 2004)
Nikki and the Robots (inactive since 2012)
NLarn
NorseWorld: Ragnarok (beta)
Nox Imperii (inactive since 2016)
Nuncabola (beta)
Nuvie (beta, inactive since 2018)
NXEngine
NXEngine-evo
Odamex (beta)
Ogrian Carpet (beta, inactive since 2018)
Omnispeak
One is enough (beta, inactive since 2008)
One Way To Go (inactive since 2011)
Open Apocalypse (beta)
Open Cube (beta, inactive since 2017)
Open Fortress (beta)
Open Greedy (beta, inactive since 2017)
Open Hexagon
Open Imperium Galactica
Open Jumpgate (beta, inactive since 2017)
Open Legend RPG
Open Meridian
Open Rails
Open Simulator (beta)
Open Surge (beta)
Open Syobon Action (beta, inactive since 2011)
Open Tibia (beta, inactive since 2014)
Open Valley (beta)
Open Zelda (inactive since 2015)
openage (beta)
OpenBOR
openc2e (beta)
OpenCity (beta, inactive since 2015)
OpenClaw
OpenCrystalCaves (beta, inactive since 2017)
openDOW (beta)
OpenDUNE
OpenFire (beta, inactive since 2018)
OpenFly (beta, inactive since 2001)
OpenFNaF (beta)
OpenGGS (beta, inactive since 2017)
OpenGL Test Drive Remake (inactive since 2015)
Openglad (inactive since 2004)
OpenHoMM (beta, inactive since 2010)
OpenKeeper (beta)
OpenLiero (inactive since 2015)
OpenMC2 (beta, inactive since 2018)
OpenMoM (beta)
OpenMOO2 (beta, inactive since 2011)
OpenMW
OpenNFS (beta)
OpenNotrium (beta)
OpenRA
OpenRTS (beta, inactive since 2006)
OpenSA
OpenSkyscraper (beta)
OpenSR (beta, inactive since 2017)
OpenSWE1R (beta)
OpenTitus (beta, inactive since 2014)
OpenTriad (beta, inactive since 2017)
OpenTTD
OpenXcom
OpenXRay
OpenYandere (beta, inactive since 2018)
Operation Citadel (beta, inactive since 2000)
Orbit-Hopper (inactive since 2019)
ORIENT (inactive since 2009)
Ostrich Riders (beta)
Other-Life (beta)
Our Personal Space
Outer Space (beta)
Outpost HD (beta)
Oxygen Engine
Pac Go
Pacman (beta)
Palapeli
Panel Attack (beta)
Paper Isaac (beta, inactive since 2015)
PARPG (beta, inactive since 2012)
Pathogen Warrior (beta, inactive since 2004)
Pathological (beta, inactive since 2003)
Pax Britannica
PCExhumed (beta)
Pentobi
Peragro Tempus (beta, inactive since 2012)
Permafrost Engine
Phantasy Star Rebirth (beta, inactive since 2013)
Pioneer
Pioneers
Pizza Business (inactive since 2003)
PlaneShift
Planetary Hoppers (beta, inactive since 2003)
Plee the Bear (beta, inactive since 2017)
Polis (inactive since 2016)
POSTAL 1 Open Source (beta, inactive since 2018)
Potato Killer (beta, inactive since 2011)
PowerslaveGDX (beta)
pq2
PrBoom+ (inactive since 2016)
Prince-Monogame (beta)
progress-quest
Project Alexandria (beta, inactive since 2007)
Project Carrot (beta, inactive since 2017)
Project Dollhouse (beta)
Project Helena (beta)
ProQuake 4 (inactive since 2018)
PSY PONG 3D (beta, inactive since 2009)
Pushover (beta, inactive since 2018)
PyBreak360 (inactive since 2015)
pycraft (inactive since 2018)
Python Kye (inactive since 2010)
Q-Gears (beta, inactive since 2015)
Qonk (beta, inactive since 2008)
Quadrapassel
Quake3e (beta)
Quartz Engine (beta)
Quatter (inactive since 2018)
RAD
Radakan (beta, inactive since 2014)
RadixEngine
Rails: an 18xx game system
Raincat (inactive since 2018)
ransack (inactive since 2016)
Raptor: Call of the Shadows (beta)
Raze
RBDOOM-3-BFG
Reconstruction of Super ZZT
Reconstruction of ZZT
Red Eclipse
RedneckGDX (beta)
Rednukem (beta)
REDriver2 (beta)
RedShift (beta, inactive since 2008)
Reflection Keen
REGoth
reone (beta)
Rescue! Max (beta, inactive since 2013)
Return of Dr. Destructo (inactive since 2015)
Return to the Roots
RickyD (beta)
Rigel Engine (beta)
Riiablo (beta)
Rise of the Triad for Linux (inactive since 2012)
Robot Redemption (inactive since 2014)
Rockbot
Rogue Clone IV (inactive since 2006)
RogueSharp
Room for Change (inactive since 2013)
Roton (beta, inactive since 2019)
rottexpr (beta)
RuneLite
RuZZT (beta)
Ryzom Core
S.C.O.U.R.G.E. (beta, inactive since 2008)
Sarah-Maries Eierjagd (inactive since 2005)
Scorched Moon (beta)
Scrap (inactive since 2017)
SDLPoP
Search for the Red Herring (inactive since 2006)
Secret Maryo Chronicles (inactive since 2009)

Sengoku: Warring States of Japan (beta, inactive since 2008)
Sentient Storage
sfall
Shadowgrounds (beta, inactive since 2017)
SharpKonquest (inactive since 2007)
Siege of Avalon : Open Source (beta, inactive since 2011)
SilverTree (beta, inactive since 2007)
Simitone (beta)
Simple Sokoban (inactive since 2014)
Simutrans
Sinatra (inactive since 2008)
Sine (beta)
Sintel The Game (beta, inactive since 2014)
SLASH'EM (beta, inactive since 2007)
Slay (beta, inactive since 2010)
Sleep Is Death (inactive since 2018)
Slime Volleyball (beta)
Slot-Racers (inactive since 2008)
Slune (inactive since 2007)
snake (inactive since 2017)
Snowballz (beta, inactive since 2007)
Soldat
Song of Albion (inactive since 2011)
Sopwith 3 (beta, inactive since 2003)
Source of Tales (inactive since 2013)
Sourcehold (beta)
Space Faring (beta)
Space Opera (beta, inactive since 2008)
Space Station 13
Space Trader for Windows (inactive since 2009)
Space War
Speed Dreams
splexhd (beta, inactive since 2012)
Spludlow Tetris (inactive since 2018)
Spooker Framework (beta, inactive since 2014)
Spring
Spring: 1944
SS13 Remake (beta, inactive since 2015)
Star Maiden Astraea Rio
Star Ruler 2
star-control2
Star-Wars-III (inactive since 2014)
Stargus (beta, inactive since 2010)
Stars! Nova (beta)
starshatter-open (beta, inactive since 2015)
Steamer Duck (beta)
Stendhal
Stockfish
Story of a Lost Sky
StressFreeZone (beta, inactive since 2007)
Strife: Veteran Edition (beta, inactive since 2016)
Stringrolled (beta, inactive since 2008)
Summoning Wars (beta, inactive since 2014)
Super Methane Brothers for Wii and GameCube (beta, inactive since 2018)
Super Transball 2 (inactive since 2005)
Supercars III (inactive since 2014)
Supremacy (beta, inactive since 2014)
SWP
Syndicate Wars Port (beta, inactive since 2010)
T-Bots (beta, inactive since 2004)
Tales of Maj'Eyal
Tanglet
Tank: Zone of Death (beta, inactive since 2017)
Tapir (beta, inactive since 2017)
TecnoballZ (beta, inactive since 2016)
TekwarGDX (beta)
Tennix!
terrarium (beta)
Tetris (in C and NCURSES)
Tetzle
The Castles of Dr. Creep
The Catacomb (inactive since 1990)
The Clans (beta, inactive since 2003)
The Epic of Heroes (beta, inactive since 2015)
The Force Engine (beta)
The hunt for the lost rainbow jewels (Jewelhunt) (beta)
The Rush (beta, inactive since 2011)
The Ur-Quan Masters (inactive since 2011)
The-Trail (beta, inactive since 2018)
Theme Park Builder 3D CAD (beta, inactive since 2013)
thiefcatcher (beta)
Thunder Engine (beta)
Thunder&Lightning (beta, inactive since 2015)
Thyme (beta)
Tile World (inactive since 2015)
Tiny Tris
Titan Tactics (beta)
TOMB5 (beta)
Tornado (inactive since 2009)
Torrega Race (inactive since 2015)
Torso Ninja (inactive since 2017)
Torso Ninja 2 (inactive since 2017)
Tower Toppler (inactive since 2012)
Train (beta)
Transfusion (beta, inactive since 2007)
Tremfusion (inactive since 2009)
Trinity Reign (beta, inactive since 2013)
TripleA
TrueCraft (beta, inactive since 2018)
Turious (beta, inactive since 2014)
TurokEX (beta, inactive since 2014)
Tux Racer (beta, inactive since 2001)
TVTower
twin-e (beta, inactive since 2015)
TwinEngine (inactive since 2015)
Tyger (beta, inactive since 2016)
Tyrian Remake (beta)
TyrQuake (beta)
UA_source (beta)
UFO2000 (inactive since 2012)
UFO: Alien Invasion
Ularn (inactive since 2018)
UlDunAd (beta, inactive since 2011)
Ultima 5 Redux (beta)
uMario (beta, inactive since 2016)
Umbra (beta, inactive since 2002)
Underworld Adventures (beta)
UnderworldExporter
uninvited (beta, inactive since 2016)
Unknown Horizons (beta)
UnNetHack
Valyria Tear
Vangers
VCMI
Vegan on a Desert Island (beta)
Veloren (beta)
Venzone
Vircadia
VMS Empire (inactive since 2014)
Vulture's Eye (inactive since 2015)
VVVVVV
Walic
War Of Kingdom (beta)
War1 (beta)
Wargamer (inactive since 2003)
Wargus
Wario-Land-3 (beta, inactive since 2018)
WarMUX (beta, inactive since 2018)
Warp Rogue (beta, inactive since 2010)
Warzone 2100
Waste's Edge (beta)
WAtomic (inactive since 2005)
Widelands
Windstille (beta, inactive since 2017)
Wintermute Engine (beta, inactive since 2013)
Witch Blast (beta, inactive since 2015)
WitchavenGDX (beta)
Wizards Magic (inactive since 2012)
Wizznic! (beta, inactive since 2016)
wkbre (beta)
Wograld (beta)
Wolf3dX (beta)
Wolfpack Empire
World of Heroes (beta, inactive since 2009)
World of Might and Magic (beta)
wxLaserTank (inactive since 2009)
Wyrmsun
X-Force: Fight For Destiny (beta, inactive since 2011)
XArchon (beta, inactive since 2003)
Xargon (inactive since 2015)
Xconq (inactive since 2005)
xDuke (beta, inactive since 2010)
XEvil
XInvaders 3D (inactive since 2000)
Xjig
XMage
Xonotic
XScavenger (inactive since 2015)
XSera (beta, inactive since 2010)
XSwing Plus (beta, inactive since 2010)
xu4 (inactive since 2016)
Xye (beta, inactive since 2013)
xygineXT (beta)
Yet Another Doom Clone
YKnytt (beta)
Yorg (beta)
ZAngband (inactive since 2005)
Zatacka X (beta)
Zauberer (beta, inactive since 2018)
Zed Online
Zelda: Mystery of Solarus DX
Zero-K
Zone of Control (beta, inactive since 2017)
zorkClone (beta)
zztgo (beta)
Aether3D (beta)
Allegro
Annchienta (inactive since 2009)
Apos.Gui (beta)
Arianne / Marauroa
Atlantis (inactive since 2016)
Atomic Game Engine (inactive since 2018)
AutoREALM
Blender game engine
Box2D
Bt Builder (beta)
C.Y.O. Adventures, text game generator (beta, inactive since 2012)
Castle Game Engine
CBoard (beta, inactive since 2018)
COCOS2D-X
Dash Engine (inactive since 2015)
Dear ImGui
Deity (inactive since 2014)
Delta Engine (inactive since 2015)
Dungeon Mapper (beta, inactive since 2013)
EasyRPG Player
Enduro2D (beta)
ENIGMA (development environment)
Flixel
FreeType
GemRB
GM Tools (beta, inactive since 2004)
Godot
Grit Game Engine (beta)
H-World (beta, inactive since 2005)
HaxeFlixel
Horde3D
Irrlicht Engine
JaNaG - Java Name Generator (inactive since 2016)
jMonkeyEngine
libGDX
Libre: The Open Source Card Game (inactive since 2010)
Lightweight Java Game Library
Lumix Engine (beta)
Mana (beta)
Maratis (beta)
Memoria
mkxp
MonoGame
MonoGame.Extended
Monster Generator
Necklace of the Eye (inactive since 2016)
O.H.R.RPG.C.E.
Octaforge
OGRE
Omega-rpg (beta, inactive since 2000)
Open RPG Maker (beta, inactive since 2014)
OpenFL
Openfrag (beta, inactive since 2008)
OpenRPG (inactive since 2013)
Orx
Panda3D
PCGen
Penumbra
Polycode (beta)
pygame
Pymapper
pyORPG (beta, inactive since 2015)
pyRacerz (beta, inactive since 2005)
Qt
Quad-engine (beta)
Rolemaster Office
RPDungeon - computer aided role playing (beta, inactive since 2006)
rpge (beta, inactive since 2014)
sandbox Game Maker (inactive since 2014)
ScummVM
SDL Game Engine 2D (beta, inactive since 2014)
SGE Game Engine (inactive since 2017)
Simple and Fast Multimedia Library
Simple DirectMedia Layer
Solarus
SR
Terasology
Terminal Overload (beta, inactive since 2016)
Thousand Parsec (beta, inactive since 2012)
Turbu (beta, inactive since 2013)
UndertaleModTool (beta)
Urho3D
Vega Strike
VGC (beta)
Vortice
Wind Waker Randomizer
WorldForge
xoreos (beta)
Zeta (beta)
ZGameEditor