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Open Source Game Clones

This site tries to gather open-source remakes of great old games in one place. If you think that something is missing from the list - please go to our GitHub repository and create an issue or even a pull request!

Since all these projects are open-source you can help them and make this world a better place. Or at least you can play something to appreciate the effort people put in them.

Similar resources: check out Free Gamer, a blog dedicated to open source game news, and Unix ASCII games, a list of opensource text-based games.

List of remakes

Some of these games aren't exact remakes but evolution of original ones, which were eventually open sourced.
SCUMM # Adventure Compilation
ScummVM (repo) Playable Very Active C++ GPL2
List of supported games is here
3D Deathchase # Racing Vehicular Combat
Deathchase 3D (repo) C GPL2
Abuse # Action Platform Horror Sci-Fi
Abuse (repo) Playable Halted C++ Lisp
Ace Combat: Assault Horizon # Action Simulation Flight Simulator Modern Military
open-horizon (repo) Active C++ nya-engine MIT
Ace of Spades # FPS World War II
Iceball (repo) Active C Lua Open GPL3 CC-BY-SA
OpenSpades (repo) Active C++ GPL3
Achtung, die Kurve! # Arcade
Curve Fever
Achtung, die Kurve! (repo) Playable Sporadic JavaScript HTML CSS GPL3
Netacka (repo) Halted C
Zatacka X (repo) Playable Sporadic C SDL GPL3
Has powerups and AI.
The Adventures of Robbo # Puzzle
Robbo (repo) Playable Active JavaScript
Age of Empires # RTS
Chariot (repo) Unplayable Active Rust SDL2 Commercial MIT
Age of Empires II # RTS Medieval
openage (repo) Semi-Playable Active C++ Python SDL Commercial GPL3
Akalabeth: World of Doom # RPG Fantasy
Aklabeth (repo) C GPL2
Alien 8 # Action
Alien 8 (repo) Playable Halted C
Allegiance # Action Simulation RTS Sci-Fi
Free Allegiance (repo) Sporadic C
Shared source
Alone in the Dark # Action Adventure Horror Alternate Historical
Alone in the Dark 2
Jack in the Dark
Alone in the Dark 3
Free in the Dark (repo) Halted C GPL
Anacreon: Reconstruction 4021 # TBS Sci-Fi Management
Ard-Reil (repo) Halted C C++ Java Pascal GPL2
Another World # Adventure Platform Sci-Fi
Out of This World
Outer World (アウターワールド Autā Wārudo)
New RAW (repo) Halted C++ GPL
rawgl (repo) Playable Active C++ GPL
Another World 2: Heart of the Alien # Adventure Platform
Heart of the Alien (repo) Halted C
AquaStax # Puzzle Platform
aquastax (repo) Active JavaScript
Archon: The Light and the Dark # TBS
XArchon (repo) Halted C C++ GPL3
Ares # Arcade RTS
Antares (repo) Playable Active C++ GPL3
Armor Alley # Arcade Real-Time Tactics Modern Military
Armor Alley (repo) Active JavaScript CC-BY-NC
Artemis: Spaceship Bridge Simulator # Simulation Sci-Fi
EmptyEpsilon (repo) Playable Active C++ Multiplayer GPL2
Artillery Duel # Artillery
Artillery Duel (repo) Halted Python GPL3
Arx Fatalis # RPG
Arx Libertatis (repo) Active C++ Commercial
Ascendancy # TBS
Starlane Empire (repo) Halted C++ GPL
Asteroids # Arcade
Agendaroids (repo) Halted C GPL2
Maelstrom (repo) Playable Halted C SDL
Sine (repo) Semi-Playable Sporadic C++ SFML MIT
Vectoroids (repo) Halted C GPL2
AstroMenace # Shmup
AstroMenace (repo) Active C++ GPL3
Astrosmash # Arcade
Cosmosmash (repo) Sporadic C++ SDL GPL2
Asylum # Action
SDL Asylum (repo) Halted C++ GPL3
Atomic Bomberman # Action
Bombman (repo) Sporadic Python GPL
Atomix # Puzzle
Atomiks (repo) Playable Halted C Commercial GPL
GNOME Atomix (repo) Halted C GPL2
KAtomic (repo) Active C++ GPL2
WAtomic (repo) Halted Delphi Kylix GPL2
Awesomenauts # RPG RTS
BlakedAwesomenaughts (repo) Active JavaScript PHP MIT
Babaliba # Arcade
Babaliba (repo) Visual FoxPro
Baldur's Gate series # RPG
Icewind Dale series
Planescape: Torment
GemRB (repo) Active C++
Ballerburg # Artillery
Ballerburg SDL (repo) Active C GPL3
Balloon Fight # Arcade
Balloon Fight (repo) Active DIV Games Studio MIT
Barbarian: The Ultimate Warrior # Fighting Platform Fantasy
Barbarian (repo) Active QuickBASIC QB64
Bard's Tale Contruction Set # RPG
Bt Builder (repo) Active C++ GPL3
Battle Chess # TBS
Open BattleChess (repo) Halted C# LGPL
Battle City # Arcade
TZOD (Tank Zone Of Death) (repo) Sporadic C++ Lua GPL3
Battlecity # RTS
Battle City (repo) Playable Halted C++ GPL3
Bermuda Syndrome # Adventure Platform
Bermuda Syndrome (repo) Playable Halted C++ Commercial
Betrayal at Krondor # RPG
xBaK (repo) Playable Halted C++ SDL GPL3
The Binding of Isaac # Roguelike
Witch Blast (repo) Playable Halted C++ SFML Open GPL CC-BY-NC-SA
Blade Runner # Adventure
bladerunner (Engine within SCUMMVM) (repo) Active C++ GPL2
replicant (repo) Halted C++
Blake Stone: Planet Strike # FPS
bstone (repo) Playable Active C++
Blood # FPS
Blood Crossmatching (EDuke32 vanilla) (repo) Active
gdxBlood (repo) Java
reverse engineered
Transfusion (repo) Playable Sporadic
Bloons Tower Defense # Tower Defense
BloonsTowerDefense6 (repo) Active Java
Bolo # Shmup
orona (repo) Playable Halted HTML5
Bomberman # Arcade
Bomb Mania Reloaded (repo) Halted C++ GPL2
Bombic (repo) Halted C++ GPL2
Bombic2 (repo) Halted C++ GPL2
I Have No Tomatoes (repo) Halted C++
Mr.Boom (repo) Active C++ SDL MIT
SDL Bomber (repo) Playable Halted C SDL
Boulder Dash # Arcade
boulder-dash (repo) Active Java
Digger (repo) Active TypeScript
GDash (repo) Active C++
Mining Haze (repo) Halted C GPL2
Rocks n diamonds (repo) Playable Sporadic C
Bratwurst # Arcade
bratwurst (repo) Halted Lisp GPL2
Bruce Lee # Action
Jet Lee (repo) Active C++
Bubble Bobble # Arcade
The Bub's Brothers (repo) Halted Python MIT
Bug Bomber # Arcade
BitRiot (repo) Active C++ SDL Apache
BurgerTime # Platform
BurgerSpace (repo) Halted C++ GPL2
Buster Bros # Arcade
Pomping World
Pang Zero (repo) Halted Perl GPL2
Buzz Aldrin's Race Into Space # Strategy Simulation TBS Management
Race Into Space (repo) Active C++ GPL2
C-Dogs # Shmup Run and gun
C-Dogs SDL (repo) Playable Active C SDL2 GPL2 CC-BY
Cadaver # Action Adventure
Cadaver (repo) Halted C++ Commercial GPL2
Caesar 3 # Simulation Strategy City Building Management
CaesarIA (repo) Playable Active C++ JavaScript GPL3
most of original game works, except war logic
Call to Power II # TBS
Civilization: Call To Power 2 Source Project (repo) C Custom
Cannon Fodder # Action RTS Shmup
Cannon Fodder (repo) Halted HTML5 MIT
Open Fodder (repo) Playable Active C++ GPL3
Carmageddon # Racing
OpenC1 (repo) Playable Halted C# Commercial Custom
Castle of the Winds # Roguelike
Castle of the Winds in Elm (repo) Active Elm JavaScript MIT
The Castles of Dr. Creep # Arcade
DrCreep (repo) Complete C++
Cataclysm # Roguelike Survival Horror
Cataclysm: Dark Days Ahead (repo) Playable Active C++ Lua ncurses CC-BY-SA
Catacomb II # Action TPS Fantasy
The Catacomb
CatacombSDL (repo) Playable Halted C Commercial GPL2
Cave Story # Adventure Platform Sci-Fi
Doukutsu Monogatari
NXEngine (repo) Playable Sporadic C++ Free GPL3
NXEngine-evo (repo) Playable Active C++ Free GPL3
Chip's Challenge # Puzzle
Tile World Playable Sporadic C GPL2
Tile World 2 (repo) Playable Halted C GPL2
ChuChu Rocket! # Puzzle Action
Duck Marines (repo) Playable Active Lua CC-BY-SA CC-BY-NC-ND
Circus Atari # Arcade
Circus Linux! (repo) Halted C GPL2
Civilization # TBS
Civ-Remake (repo) Halted Ruby As-is
CivOne (repo) Active C# Commercial CC0
Claw # Platform
OpenClaw (repo) C++ SDL GPL3
Clonk # Action Platform RTS
OpenClonk (repo) Active C++ ISC
Columns # Puzzle
div-columns (repo) Active DIV Games Studio MIT
Command & Conquer # RTS Sci-Fi Modern Military
Command & Conquer: Red Alert
Dune 2000
OpenRA (repo) Active C# Multiplayer GPL3
Command & Conquer: Generals # RTS Sci-Fi Modern Military
Thyme (repo) Active C++
Commander Keen Series # Platform
Commander Genius (repo) Active C++ GPL2
Keen Dreams (repo) Active C GPL2
Omnispeak (repo) Active C GPL2
Commando # Shmup
CommandoJS (repo) Playable Halted JavaScript CoffeeScript melonJS MIT
Contra # Platform
Contra_remake (repo) Halted C++ GPL2
CookieClickerRemake (repo) Active C# As-is
Cosmic Ark # Action
CosmicArk-Advanced (repo) JavaScript custom
Crazy Cars # Racing
Crazy Cars (repo) QuickBASIC QB64 As-is
Creatures # Puzzle
Open Creatures (repo) Halted C++ LGPL
forks present
Crystal Caves # Platform
OpenCrystalCaves (repo) C++ MIT
Crystal Quest # Arcade
CrystalQuest (repo) Active JavaScript HTML5 JQuery MIT
Cube 2: Sauerbraten # FPS
Inexor (repo) Semi-Playable Active C++ JavaScript HTML CSS Cube 2 Engine Zlib
In addition to improving Sauerbraten one of the stated goals of the project is to remove/replace all content with unclear or non-free licenses from the game.
open-cube (repo) Semi-Playable Sporadic C++ Zlib
A modification of tesseract so basically Cube 2 with better graphics and developed on github in a modern vcs.
Curse of the Azure Bonds # RPG
coab (repo) Playable Sporadic C# BSD
Cytadela # FPS
Cytadela (repo) Sporadic C++ GPL3
Dandy # Arcade
Fight Or Perish (repo) Sporadic C GPL2
Dark Forces # RPG
Shadow Warrior
The Elder Scrolls II: Daggerfall
XL Engine (repo) Sporadic C++
Dark Reign 2 # RTS
Dark Reign 2 (repo) Halted C++
Defender # Arcade
Defendguin (repo) Sporadic C GPL2
Deflektor # Puzzle
Deflektor X4 Halted C
Mirror Magic Playable Halted C
Descent # FPS
Descent 2
D2X-XL (repo) Active C++
DXX-Rebirth (repo) Active C
Kathodos (repo) Halted Python Panda3D
DesertStrike: Return to the Gulf # Shmup
openstrike (repo) Unplayable Sporadic C++ GPL3
Desperados: Wanted Dead or Alive # RTS
OpenDeathValley (repo) Sporadic C GPL3
Destructo # Arcade
Island of Dr. Destructo
The Island of Doctor Destructo
Return of Dr. Destructo (repo) Complete C++ Allegro MIT
Deuteros # RTS
Deuteros X (repo) Halted C#
Diablo # RPG Action Horror Fantasy Medieval
DGEngine (repo) Active C++ Zlib
Devilution (repo) Playable Active C++ PD
freeablo (repo) Playable Active C++ Python Commercial GPL3
Diablo II # RPG Action Action RPG Fantasy Medieval
OpenD2 (repo) Unplayable Sporadic C C++ Commercial GPL3
Needs original Diablo II game data
Digger # Arcade
Digger Remastered (repo) Playable Halted C GPL
Digimon World # RPG
Digimon World Project Ark (repo) Active C# Unity
Dink Smallwood # RPG
GNU FreeDink (repo) Sporadic C GPL3
Dodger # Arcade
dodger-remake (repo) Halted C++
Dogs of War # Shmup
openDOW (repo) Sporadic C GPL3
Doom # FPS
Doom II
Chocolate Doom (repo) Active C GPL2
Doom Legacy (repo) Playable Active C++
DOOM-iOS (repo) Halted C++ GPL2
Doomsday (repo) Active C GPL2
Freedoom (repo) Sporadic Free
GLHeretic (repo) C
GZDoom (repo) Active C++
Mocha Doom (repo) Active Java GPL3
Odamex (repo) Playable Active C GPL2
PrBoom+ (repo) Active C GPL2
ZDoom (repo) Active C
Doom 3 # FPS
AdaDoom3 (repo) Sporadic Ada
dhewm3 (repo) Active C++ GPL3
RBDOOM-3-BFG (repo) Active C++ GPL3
works with BFG edition only
Doom 64 # FPS
Doom64EX (repo) Active C GPL2
Drakan: Order of the Flame # Action Adventure Fantasy Medieval
OpenDrakan (repo) Unplayable Active C++ Commercial GPL3
Needs original game data
Drugwars # Strategy TBS Crime
Dope Wars (repo) Sporadic C
RxWars (repo) Active JavaScript
Duck Hunt # Arcade
Duck Hunter (repo) Halted Python
Duck-Rehunt (repo) Halted Python GPL
duckhunt (repo) Sporadic Python
duckhunt (repo) Halted JavaScript
Duke Nukem # Platform
Freenukum Jump'n Run (repo) Halted C GPL3
Duke Nukem 3D # FPS
EDuke32 (repo) Active C
Dune 2 # RTS Sci-Fi
Dune 2 - The Maker (repo) Active Java MIT
Dune Dynasty (repo) Active C GPL2
Dune Legacy (repo) Active C++ GPL2
OpenDUNE (repo) Active C GPL2
Dungeon Keeper # Strategy RTS Horror Fantasy Comedy
KeeperFX (repo) Active C
Dungeon Master # RPG Action
Chaos Strikes Back (repo) Halted C++
DungeonMaster (repo) Active C#
DX-Ball # Arcade
DXBall (repo) Active Java Gradle
E.T. the Extra-Terrestrial # Arcade Adventure
javascript-E.T. (repo) Sporadic JavaScript HTML5 MIT
Earth Shaker # Puzzle
earth-shaker (repo) Active Unity
EarthShakerDS (repo) Active C++ Commercial BSD
Nintendo DS port
Eat The Whistle # Sports Soccer
Eat The Whistle (repo) Sporadic C GPL2
Echochrome # Puzzle
Mugen Kairō
l-echo (repo) Halted C++ GPL3
Elasto Mania # Platform
X-Moto (repo) Playable Active C++ GPL2
The Elder Scrolls II: Daggerfall # RPG
Daggerfall Unity (repo) Playable Active Unity MIT
Daggerfall.NET (repo) Halted C#
opendf (repo) Unplayable Sporadic C++ GPL3
The Elder Scrolls III: Morrowind # RPG Fantasy
OpenMW (repo) Playable Active C++ GPL3
The Elder Scrolls: Arena # RPG
OpenTESArena (repo) Unplayable Active C++ SDL2 Commercial MIT
opentesarenapp (repo) Unplayable Halted C++ Commercial
Elements # TBS
OpenEtG (repo) Active JavaScript MIT
Elite # Action Simulation Flight Simulator Sci-Fi
Mission ELITE: The Battle For Birera (repo) Halted C
Elite II # Action Simulation Flight Simulator Sci-Fi Espionage
Frontier 1337 (repo) C
PSP port
GLFrontier (repo) Halted C++
Elite III # Action Simulation Flight Simulator Sci-Fi Espionage
Frontier: First Encounters
GLFFE - Nic Mod (repo) C++ Assembly SDL
jffe (repo) Halted C++ SDL
Emperor of the Fading Suns # TBS
Phoenix (repo) Active Java As-is
Encounter # Shmup
encounter (repo) Active JavaScript WebGL
Entombed! # Adventure
Entombed! (repo) Halted C
Escape from Colditz # Action Adventure
Colditz Escape! (repo) Active C GPL3
Exile # Action Adventure
Exile 1988
EXILE (repo) Halted Lua LÖVE Custom
Exolon # Shmup
exolon (repo) Active JavaScript
Eye of the Beholder II # RPG Action
Dungeon Eye (repo) Sporadic C#
F-1 Spirit # Sports Racing Motorsports
F-1 Spirit (repo) C++ SDL Free GPL
F-Zero # Racing
F-Zero Clone (repo) Active JavaScript CoffeeScript WebGL
Racer (repo) Active C++ Python GPL3
Fade to Black # Action Adventure
f2bgl Sporadic C++ SDL
Fallout 2 # RPG
DarkFO Unplayable Active JavaScript Python Commercial Apache
Falltergeist (repo) Unplayable Active C++ Commercial
parpg (repo) Halted Python C++ GPL
sfall (repo) Playable Active C++ C C# HLSL Commercial GPL3
Needs full original game
Fallout 3: Van Buren # RPG
Van Buren Project (repo) Halted C# Custom
Fallout Online # MMORPG
fonline (repo) Active C++ GPL3
Fallout Tactics: Brotherhood of Steel # RTS
FreeFT (repo) Active C++ BSD
Fantastic Journey # Shmup
Gokujō Parodius!
pucpr-ld-parodius (repo) Halted Construct
Final Fantasy VIII # RPG
OpenTriad Active Java
Flag Catcher # Puzzle
Gift Grabber (repo) Active JavaScript BackBone.js
Flappy Bird # Arcade Platform
Clumsy Bird (repo) Active MelonJS MIT
CrappyBird (repo) Sporadic JavaScript MIT
Hocoslamfy (repo) Halted C SDL GPL
Flashback # Adventure Platform
REminiscence Sporadic SDL
Floor 13 # TBS
Floor 13 (repo) Active Ruby
Flying Shark # Shmup
Friking Shark (repo) Halted C++ GPL3
Football Manager # Simulation Strategy Sports Soccer Management
Football Manager (repo) C GPL2
Forgotten Realms: Unlimited Adventures # RPG
Dungeon Craft (repo) Playable Active GPL2
Forsaken # FPS Sci-Fi Post-Apocalyptic
ProjectX (repo) Playable Halted C GPL2
Freelancer # Action Simulation TPS Sci-Fi
Librelancer Active C# OpenGL MPL
FreeSpace 2 # Action Simulation Sci-Fi
FreeSpace Source Code Project (repo) Active C++
Frog! # Arcade
Back To Nature
back-to-nature-c64-remake (repo) Active Java
Frogger # Arcade
Froggix (repo) Halted Python GPL2
Frogs and Flies # Arcade
Frog Bog
Batrachians (repo) Halted C++ GPL2
Galaxian # Arcade
galaxian (repo) Halted ActionScript
Geometry Wars # Shmup
Geometry Wars Remake (repo) Halted Java GPL
Grid Wars 2 (repo) Blitz BASIC
Gish # Platform Comedy
freegish (repo) Active C SDL Open GPL2 CC-BY-SA
Gladiator # Action RPG
Openglad (repo) Sporadic C++
Glest # RTS Medieval Fantasy
Glest Advanced Engine Playable Sporadic C++
MegaGlest (repo) Playable Active C C++ GPL3 CC-BY-SA
Various mods are available.
Gods # Platform
Gods -Deluxe- (repo) Halted Java
GoldenEye 007 # FPS
ges-code (repo) Active C++ GPL3
The Goonies # Platform
The Goonies (repo) C++
Gorillas # Arcade Artillery
Gorillas (repo) Sporadic Objective-C JRL
Gothic # RPG Action
Gothic II
REGoth (repo) Playable Active C++ Commercial GPL3
Grand Theft Auto # Action Adventure Crime
OpenGTA (repo) Halted C++ As-is
Grand Theft Auto 2 # Action Adventure Crime
gta2net (repo) Halted C#
Grand Theft Auto III # Action Adventure
OpenRW "Open ReWrite" (repo) Unplayable Sporadic C++ SDL GPL3
Gravity Force # Arcade
Galaxy Forces V2 (repo) Active C++
The Great Giana Sisters # Platform
OpenGGS (repo) Active C++ GPL2
Grim Fandango # Adventure
Escape from Monkey Island
Myst III: Exile
ResidualVM Active C++
Guitar Hero # Rhythm
Frets on Fire (repo) Playable Halted Python
(look for songs on the wiki)
Frets on Fire X (repo) Playable Active Python
Guitar Hero # Rhythm
Dance Dance Revolution
Frets on Fire (repo) Playable Halted Python
(look for songs on the wiki)
Frets on Fire X (repo) Playable Active Python
Hardwar # Action Simulation Flight Simulator Sci-Fi Cyberpunk
Hardwar (repo) Sporadic C C++
Haunted House # Action Adventure Survival Horror
HauntedHouse (repo) Complete ActionScript
Head over Heels # Platform
Head over Heels 2 (repo) C++ Allegro
HeadOverHeels (repo) Sporadic C++ GPL3
Heart of Darkness # Platform Adventure
HODe (repo) Halted C++
Heavy Smash # Sports Handball Sci-Fi
open-heavy-smash (repo) Halted C++
Heroes of Might and Magic II # TBS
fheroes2 (repo) Active C++
Heroes of Might and Magic III # TBS
VCMI (repo) Playable Active C++ SDL Commercial GPL2
time-based releases
Hexen II # FPS
Hammer of Thyrion (repo) Active C
Highway Encounter # RTS
Vorton (repo) Halted C GPL3
History Line: 1914-1918 # Strategy Turn-Based Tactics World War I
Historyline (repo) Halted C# Unity
The Hobbit # Adventure
hobbitgfx (repo) Active JavaScript
Homeworld # RTS
Homeworld SDL (repo) Playable Halted SDL
HoverRace # Racing
HoverRace (repo) Active C++ Custom
Hovertank 3D # FPS
Hovertank3D (repo) Complete C Assembly GPL2
Imperialism # TBS
imperialism-remake (repo) Active Python GPL3
Imperium Galactica # RTS
Open Imperium Galactica (repo) Playable Sporadic Java
Interstate '76 # Action Racing Post-Apocalyptic
Interstate Outlaws (repo) Halted Python GPL
Iron Seed # RTS
Iron Seed (repo) Halted Pascal GPL3
Jagged Alliance 2 # RPG Strategy Turn-Based Tactics Sci-Fi Modern Military
Jagged Alliance 2 - Stracciatella (repo) Playable Active C++ C PD
Jazz Jackrabbit # Platform
OpenJazz (repo) Playable Sporadic C++ SDL Commercial GPL2
Jazz Jackrabbit 2 # Platform
Jazz 2 Resurrection (repo) Playable Active C# Mono Multiplayer Commercial GPL3
For the moment only use OpenGL ES 3
Project Carrot (repo) Semi-Playable Sporadic C++ QT5 MIT
Needs original game data
Jedi Knight II: Jedi Outcast # FPS TPS
JediOutcastLinux Playable Active C++
Jedi Knight: Jedi Academy # FPS TPS
JediAcademyLinux Playable Active C++
OpenJK Playable Active C++
Jet-Story # Platform
Jet-Story (repo) Active C++ MIT
Jetpac # Arcade
Jetpac remake (repo) Complete C# XNA
Jewel Thief # Arcade
jewelthief (repo) Active Java CC-BY
JezzBall # Arcade
Ice Breaker (repo)
Joust # Arcade
Ostrich Riders (repo) Sporadic C++ GPL3
Jump 'n Bump # Platform
Jump'n'Bump Halted C GPL2
Jumpgate: The Reconstruction Initiative # MMORPG
Open Jumpgate Active C++
Jumping Jack # Arcade
Jumping Jack 2: Worryingly Familiar (repo) Halted C++
Jumping Jack: Further Adventures (repo) Halted C++
Jumpman # Platform
Jumpman (repo) Halted Assembly
Kaboom! # Arcade
DonkeyInTrouble (repo) Sporadic Lua LÖVE
Ken's Labyrinth # FPS
LAB3D/SDL (repo) Sporadic C
Kid Chameleon # Platform
KidChameleonRemake (repo) Active C#
Knights # Arcade
Knights (repo) Active C++ GPL3
Knights and Merchants # RTS
KaM Remake (repo) Active Delphi
Kula World # Platform Puzzle
Roll Away
Kula Quest
Cubosphere (repo) Halted C++ GPL3
Ladder # Arcade
Ladder (repo) C#
Ladder (repo) Java GPL2
(source inside JAR file)
ladder (repo) Active Go MIT
Larn # Roguelike
NLarn (repo) Active C Lua GPL2
The Last Ninja # Action Adventure
LastNinja (repo) Playable Sporadic C++
lttp-phaser (repo) Active JavaScript WebGL Phaser MIT
Solarus (repo) Active C++ Lua
Legion # Adventure
legion (repo) Halted C++ Irrlict Custom
Lego Rock Raiders # RTS
rock-raiders-remake (repo) Active JavaScript
Liero # Platform Shmup
Gusanos (repo) Playable Halted
OpenLiero (repo) Halted C++
OpenLieroX (repo) Active C++
Lionheart # RPG Action
Lionheart Remake (repo) Active Java GPL2
Little Big Adventure # Adventure
twin-e (repo) Playable Halted C Commercial GPL
Locomotion (Amiga 1992) # Arcade Puzzle
Pendomotion (repo) Active Python
Lode Runner # Arcade
KGoldrunner (repo) Playable Active C++ SDL2 GPL2
Lode Runner - Total Recall (repo) Active HTML5
XScavenger Playable Halted C
Log!cal # Puzzle
Orbium (repo) Playable Sporadic JavaScript HTML5 GPL2
Pathological (repo) Halted Python GPL2
The Lord of the Rings Volume 1 # Action RPG
Lord of the Rings game engine (repo) Playable Halted C
Lose Your Marbles # Puzzle
Lose Your Marbles (repo) Sporadic JavaScript MIT
Lugaru: The Rabbit's Foot # Action
Lugaru (repo) Active C++ GPL2
Lumines # Puzzle
luminesk5 (repo) Halted Objective-C GPL3
Mechanized Assault and eXploration Reloaded (repo) Sporadic C++
M.U.L.E. # TBS
mewl (repo) Sporadic C++ GPL2
Mad TV # Strategy Simulation Management
TVTower (repo) Active Blitz BASIC C
Mafia: The City of Lost Heaven # Action Adventure Crime
OpenMF (repo) Unplayable Active C++ Commercial GPL3
Magic Carpet # FPS
magiccarpet (repo) Halted C++
Magical Drop # Puzzle
Krystal Drop (repo) Halted C++ GPL2
Manic Miner # Platform
Manic Miner (repo) Blitz BASIC
Marathon # FPS Sci-Fi
Marathon 2
Marathon Infinity
Aleph One (repo) Playable Active C++ Lua GPL3
Marble Madness # Arcade
Marble Madness 3d (repo) Halted C++
Trackballs (repo) Halted C++
Mario World # Platform
Full Screen Mario (repo) Playable Active JavaScript
Mari0 (repo) Lua LÖVE
Secret Maryo Chronicles (repo) Sporadic C++
Master of Orion Series # TBS 4X Sci-Fi
Master of Orion 2
1oom (repo) Playable Active C SDL Commercial GPL2
OpenMOO2 (repo) Sporadic Python
Maxit # Strategy TBS
KittenMaxit (repo) Sporadic LibGDX MIT
Maxit (repo) Java
Maxit (repo) Sporadic C++ BSD
The Maze of Galious # Platform
The Maze of Galious (repo) C++ GPL2
MechCommander 2 # RTS
MechCommander 2 Omnitech (repo) Halted C++ MS-PL
MechWarrior # Simulation FPS Vehicular Combat Sci-Fi Management
LinWarrior (repo) Halted C++ Apache
Medal of Honor: Allied Assault # FPS
OpenMoHAA (repo) Unplayable Sporadic C SDL GPL2
based on ioquake3
Mega Lo Mania # RTS
Gigalomania (repo) Playable Sporadic C++
MegaMan # Platform
Executive Man (repo) Active JavaScript Custom
Rockbot (repo) Active C++ SDL GPL2
Meridian 59 # RPG
Meridian 59 German Server 112 (repo) Active C GPL2
Meridian 59 Server 105 (repo) Active C GPL2
Open Meridian (repo) Active C GPL2
Metroid Prime # FPS Adventure
urde (repo) Active C++ Python MIT
engine only
Mice Men # Puzzle
Mice Men Remix (repo) Playable Complete Java libgdx GPL3
Micro Machines # Racing
Microracers (repo) Halted C++ GPL2
Midnight Club II # Racing
Midnight Club 2
OpenMC2 (repo) Playable Sporadic C++ Multiplayer Commercial GPL3
Millipede # Arcade
Monsters and Mushrooms (repo) Halted Python GPL2
Minecraft # Action FPS Survival Sandbox Fantasy
Digbuild (repo) Halted C++ GPL2
Gnomescroll Playable Halted C++ GPL3
Hematite (repo) Active Rust MIT
Manic Digger (repo) Sporadic C#
Minetest (repo) Active C C++ Open GPL2 CC-BY-SA
pycraft (repo) Active Python GPL2
Terasology (repo) Playable Active Java Apache
TrueCraft (repo) Active C# MIT
Voxelands (repo) Active C++ GPL3
Minesweeper # Puzzle
Minesweeper (repo) Halted F#
Minesweeper (repo) Playable Sporadic JavaScript React Redux Free
Minesweeper.Zone (repo) Playable Active JavaScript Open
Open source JavaScript Minesweeper clone with high scores
Missile Command # Arcade
Missile Command (repo) Playable Halted Lua
Missile Command # Arcade
Missile Command (repo) Playable Halted Lua
Monty Mole # Platform
Monty Mole PC remake (repo) Halted C++
Moonbase Commander # TBS
Scorched Moon (repo) Sporadic Python GPL3
Mortal Kombat # Fighting Fantasy
mk.js (repo) Playable Halted JavaScript MIT
Movie Business # Strategy TBS Management
movbizz (repo) Active PHP JavaScript MIT
Nebulus # Arcade
Toppler Sporadic C++
The Need for Speed # Racing
OpenNFS1 (repo) Halted C#
Need For Speed II SE # Racing
NFSIISE (repo) Playable Active C++ SDL2 Commercial
Nether Earth # RTS
Nether Earth Remake (repo) C++
Neverwinter Nights # RPG Fantasy Sci-Fi Martial Arts
Neverwinter Nights 2
Star Wars: Knights of the Old Republic
Star Wars: Knights of the Old Republic II – The Sith Lords
Jade Empire
Sonic Chronicles: The Dark Brotherhood
The Witcher
Dragon Age: Origins
Dragon Age II
xoreos (repo) Unplayable Active C++ OpenGL SDL2 Commercial GPL3
Night Stalker # Arcade
Afternoon Stalker (repo) Sporadic C++ GPL2
Nodes of Yesod # Platform
Nodes of Yesnod remake (repo) Halted C# XNA
Nuclear Reaction # Puzzle
c64-nuclearreaction (repo) C Assembly GPL3
chainreaction (repo) Java GPL3
Octopus # Arcade
Octopus (repo) Active Swift
Apple TV 4 required
Oddworld # Platform Adventure
Oddworld: Abe's Oddysee
Oddworld: Abe's Exoddus
alive (repo) Active C++ MIT
One Must Fall: 2097 # Fighting Sci-Fi
OpenOMF (repo) Playable Active C Free MIT
single player, 2 player and network play work, content from omf2097.com
Ruby OMF 2097 Remake (repo) Halted Ruby BSD4
Outcast # Adventure Action
OpenOutcast (repo) Halted C++ GPL2
Outrun # Arcade Racing
アウト ラン
Auto Ran
Cannonball (repo) Playable Active C++ Commercial
Outrun (repo) Active QuickBASIC QB64
Overflow # Puzzle
JOverflow (repo) Halted Java
Oxyd # Puzzle
Enigma (repo) Sporadic C++ SDL GPL2
Panzer General # TBS
LGeneral (repo) Playable Halted C
Open Panzer (repo) Active HTML5
OpenGeneral Sporadic C++
Paradroid # Shmup Puzzle Fantasy Sci-Fi
FreedroidClassic Complete C
Nighthawk (repo) Playable Halted C++
Paratrooper # Arcade
Paratrooper (repo) Halted Python
Phantasy # RPG
Phantasy (repo) Halted Java
Pipe Mania # Puzzle
Pipemania (repo) Halted Lua Love3D
Pitfall! # Arcade Platform
div-pitfall (repo) Active DIV Games Studio MIT
Pokémon # RPG
OpMon (repo) Active C++ SFML
Tuxemon (repo) Playable Active Python Pygame
Pokémon Mystery Dungeon # RPG
PKMN-FX (repo) Active Java GPL3
Pole Position # Sports Racing Motorsports
grid-leader (repo) Halted Python Panda3D
Populous: The Beginning # RTS
OpenPop (repo) Halted C++ GPL3
Portal # FPS Puzzle
glPortal (repo) Sporadic C++
Prince of Persia # Platform
FreePrince Playable Halted C
SDLPoP (repo) Playable Active C
Progress Quest # MMORPG Comedy
pq2 (repo) Active C++ ncurses GPL3
Pushover # Platform Puzzle
Pushover (repo) Playable Sporadic C++
Puzznic / Brix # Puzzle Arcade
Wizznic! (repo) Playable Active C
Q*bert # Arcade
Q-Bert-Remake (repo) Active C#
ReQbert (repo) Halted HTML5 GPL3
Quadnet # Arcade
Mauvenet (repo) C++
Quake # FPS
DarkPlaces (repo) Active C GPL2
ezQuake (repo) Active C GPL2
ProQuake 4 (repo) C GPL2
QuakeSpasm (repo) Active C GPL2
TyrQuake (repo) Active C GPL2
vkQuake (repo) Active C Vulkan GPL2
Quake 2 # FPS
Jake2 (repo) Active Java GPL2
Yamagi Quake II (repo) Active C GPL2
Quake 3 # FPS
FQuake3 (repo) Sporadic F# GPL2
ioquake3 (repo) Active C
OpenArena (repo) Sporadic C
QuakeJS (repo) Halted JavaScript MIT
R-Type # Shmup
R-Type Clone from Octobinz (repo) C++
demo only
rtype (repo) Halted C++
Railroad Tycoon # Simulation Strategy Management
FreeRails (repo) Halted C++ Java
FreeRails 2 (repo) Halted Java
Rampart # Shmup Puzzle
Castle-Combat (repo) Playable Halted Python
Escalade (repo) Halted Scala
Rampart-Android (repo) Active Java
Raptor: Call of the Shadows # Shmup
raptor (repo) Halted JavaScript
Redneck Rampage # FPS
erampage (EDuke32 fork) (repo) Active C
Rescue! # Action Adventure
Rescue! Max (repo) Halted Java GPL2
Rick Dangerous # Platform
rickyd (repo) Playable Sporadic C++
xrick Playable Halted C
Rise of the Triad # FPS
Rise of the Triad for Linux (repo) Sporadic C
River Raid # Shmup
Ruby Raid (repo) Halted Ruby
Road Fighter # Racing Arcade
Road Fighter (repo) C++ LGPL2
Robotfindskitten # Adventure Roguelike Sci-Fi Meditative Comedy
rfk-inform (repo) Halted Perl
Robotron: 2084 # Arcade
robotron (repo) Active JavaScript
Rodent's Revenge # Puzzle
A Mouse's Vengeance (repo) Active Java
Open Rodent's Revenge (repo) Halted C++ GPL3
RollerCoaster Tycoon # Simulation Strategy Management
FreeRCT (repo) Halted C++
OpenRCT2 (repo) Playable Active C++ GPL3
RollerCoaster Tycoon 2 # Simulation Strategy Management
OpenRCT2 (repo) Playable Active C++ GPL3
Ryzom # MMORPG
Ryzom Core (repo) Active C++ AGPL3
Sea Dragon # Action Shooter
zedragon (repo) Active Assembly MIT
Sensible Soccer # Sports Soccer
FreeKick (repo) Active C++ GPL
YSoccer (repo) Playable Sporadic Blitz BASIC GPL
Sensitive # Puzzle Arcade
One Way To Go (repo) Active Lua GPL3
sensitive-js (repo) Active JavaScript
The Sentinel # Puzzle
sentinel (repo) Sporadic Java JavaFX
The Settlers # RTS
The Settlers II
Freeserf (repo) Playable Active C
The Settlers II # RTS
Return to the Roots (repo) Active C++
The Settlers III # RTS
JSettlers (repo) Active Java Commercial MIT
MonoStrategy (repo) Halted C# Commercial AGPL3
Seven Kingdoms # RTS
Seven Kingdoms: Ancient Adversaries (repo) Active C++
Shadow Warrior # FPS
JonoF's Shadow Warrior Port (JFSW) (repo) Playable Active C
SWP (repo) C GPL2
Shining Force II # RPG
Shining Force 2 Reverse Engineer (SF2RE) (repo) Sporadic C
reverse engineering project
Shining Soul # Action RPG
Shining Soul Remake (repo) Halted Python pygame As-is
Shobon Action # Platform
Open Syobon Action (repo) Halted C++ GPL2
Sid Meier's Alpha Centauri # TBS
Freeciv Alpha Centauri project (repo) Halted C GPL2
Sid Meier's Colonization # TBS
cc94 (repo) Active C++ Python Commercial AGPL3
FreeCol (repo) Active Java GPL2
Sid Meier's Pirates! # Action Adventure RTS
Crown and Cutlass (repo) Halted C++ BSD
Siege # Puzzle Arcade
FreeSiege (repo) Playable Sporadic C++
Siege of Avalon # Action RPG
Siege of Avalon Open Source (repo) Halted Pascal Custom
Silencer # Action
zSILENCER (repo) Playable Halted C++
Silent Hunter 4 # Action Simulation Submarine Simulator World War II
Danger from the Deep (repo) Sporadic C++
SimCopter # Simulation
sccopter (repo) Unplayable Active C++ MIT
The Sims Online # Simulation Management
FreeSO (repo) Playable Active C# MonoGame MPL
Project Dollhouse (repo) Active C# Monogame Mozilla
SimTower # Simulation Strategy Management
OpenSkyscraper (repo) Playable Active C++
SingStar # Rhythm
UltraStar Deluxe (repo) Playable Active Object Pascal Lua SDL2 GPL2
SkiFree # Arcade Sports Skiing
Skifree-HTML5-clone (repo) Halted HTML5 GPL3
skifree.js (repo) Active JavaScript Custom
Skool Daze # Action Adventure Platform
pyskool (repo) Active Python GPL3
SkyRoads # Platform
OpenRoads (repo) Playable Halted TypeScript HTML5 WebGL MIT
spaceroads (repo) Halted C++ Ogre3D
Slot Racers # Arcade
Slot-Racers (repo) Halted C GPL3
Snake # Arcade
snake (repo) Playable Active Java WTFPL
Snipes #
Snipes (repo) Playable Complete C++ SDL2 Free Custom
reverse-engineered from original binary, aims for 100% logic compatibility with original game
Solar Fox # Arcade
SolarWolf (repo) Python LGPL2
Sopwith # Arcade
SDL Sopwith (repo) Playable Halted C SDL
Sopwith 3 (repo) C++ GPL2
Space Invaders # Arcade
div-spaceinvaders2600 (repo) Active DIV Games Studio MIT
pyspaceinvaders (repo) Halted Python GPL2
Space Rangers # TBS
Space-rangers (repo) Halted C#
Space Rangers 2: Dominators # RTS Adventure Shmup RPG TPS
OpenSR (repo) Active C++ Python
Space Station 13 # RPG Simulation Sci-Fi Comedy Espionage
Griefly (repo) Active C++ Go Python MIT
Space Station 14 (repo) Active C# GPL3
ss13remake (repo) Halted C# GPL3
Speedball 2 # Action Sports Handball Hockey Sci-Fi Cyberpunk
Speedball 2 Semi-Playable Halted C#
reverse engineered prototype
Star Control 2 # RTS
star-control2 (repo) Active C++ MIT
The Ur-Quan Masters (repo) Active C
Star Fox 64 # Action Flight TPS Sci-Fi
UnnamedStarFoxClone (repo) Active C# Unity
Star Raiders # Action Simulation Sci-Fi
Atari8bit_StarRaiders (repo) Halted Assembly
reverse engineering project
Star Trek: Voyager – Elite Force # FPS
RPG-X (repo) Active C GPL2
Star Wars (1983 arcade game) # Arcade
Star-Wars-III (repo) Complete Python GPL2
Starcraft # RTS
Stargus (repo) Sporadic C++ Lua
Stars! # TBS
Freestars (repo) Halted C++ GPL2
NStars! (repo) Halted C# GPL2
Starshatter # Simulation Space Flight Sci-Fi
starshatter-open (repo) Sporadic C++ Custom
Stratosphere: Conquest of the Skies # RTS TPS
openStrato (repo) Active JavaScript WebGL GPL2
Strike Commander # Action Simulation Flight Simulator Modern Military
libRealSpace (repo) Active C++
Strikers 1945 # Shmup
Py1945 (repo) Halted Python GPL
Stunt Car Racer # Racing
Stunt Car Racer Remake (repo) Halted C++
stuntcarremake (repo) Active C++
Stunts # Racing
4D Sports Driving
Ultimate Stunts (repo) Sporadic C++
Styx # Arcade
Styx (repo) Halted C++
SunDog: Frozen Legacy # RPG Space Flight
sundog (repo) Sporadic C MIT
SunDog Resurrection (repo) Sporadic Java Python
Supaplex # Puzzle
splexhd (repo) Halted C++ GPL2
Super Cars # Racing
Supercars III (repo) Sporadic JRL
Super Foul Egg # Puzzle Arcade
SuperFoulEgg (repo) Halted Objective-C Custom
Super Mario # Platform
Mega Mario Playable Halted C++
pucpr-ld-mario3 (repo) Halted Construct2
uMario (repo) Playable Halted C++ SDL2 GPL2
Super Methane Brothers # Platform Arcade
Super Methane Brothers Playable Halted C++
super-methane-brothers-gx (repo) Sporadic C++ GPL2
Wii and GameCube port
Super Monkey Ball # Arcade Platform
irrlamb (repo) Active C++ Irrlicht GPL3
Neverball (repo) Active C++ SDL GPL2
Veraball (repo) Active Gobot MIT
Survivor (1986) # Puzzle
Survivor (repo) Playable Sporadic JavaScript HTML CC-BY-NC
Swing # Puzzle Arcade
XSwing Plus (repo) Sporadic Java GPL3
Syndicate # RTS
FreeSynd (repo) Active C++
Syndicate Wars # RTS
Syndicate Wars Port Playable Halted Commercial GPL3
no network support
System Shock # RPG FPS
System Shock: Enhanced Edition
Citadel (repo) Unity
Shockolate (repo) Playable Active C SDL2 Commercial GPL3
Needs game data from System Shock: Enhanced Edition
Tempest # Arcade
Arashi-JS (repo) Halted JavaScript
Space Twitch (repo) Active C#
wbta (repo) Active Java
Terraria # Action Platform Survival Sandbox Fantasy
LastTry (repo) Active Java LibGDX MIT
Terraria (repo) C#
Reverse engineered code
terrarium (repo) Active C++
Test Drive # Racing
opengl_test_drive_clone (repo) C GPL3
Tetris # Puzzle Arcade
tetris (repo) Java WTFPL
Tetris Attack # Puzzle Arcade
Crack Attack! (repo) Playable Halted C++
networking support
FreeBlocks Playable Halted C SDL2
Panel Attack (repo) Playable Active Lua
basic networking support
Theme Hospital # Strategy Simulation Management Comedy
CorsixTH (repo) Playable Active C++ Lua SDL2 Commercial MIT
time-based releases
Theme Park # Strategy Simulation Management Comedy
Theme Park Builder 3D CAD (repo) Halted C++ OpenGL SDL GPL2
Thief # Action Adventure Crime Fantasy
openDarkEngine (repo) Unplayable Halted C++ GPL2
Thromolus # Puzzle
thromolusng (repo) Halted Python GPL3
Thrust # Arcade
Thrust (repo) Halted C GPL2
Tiny Wings # Arcade
Tiny Wings (repo) Halted Objective-C MIT
Titus the Fox # Platform
OpenTitus (repo) Sporadic C SDL
Tomb Raider # Platform Adventure Action
OpenLara (repo) C++ WebGL BSD 2-Clause
OpenRaider Active C++
OpenTomb (repo) Active C++
Total Annihilation # RTS
Spring (repo) Active C++ Java Python
Total Annihilation 3D (repo) Sporadic C++
Touhou # Shmup Bullet Hell Anime
PyTouhou (repo) Active Python
Taisei Project (repo) Playable Active C Open MIT
TrackMania # Racing
ManiaDrive (repo) C PHP
Transplant # Arcade
Spaceship Duel (repo) Sporadic C# BSD
Transport Tycoon # Strategy Simulation Management
Transport Tycoon Deluxe
OpenTTD (repo) Playable Active C++ Swappable GPL2
Tranz Am # Arcade
Tranzam (repo) Halted C++
Tron # Arcade
newtron (repo) Halted JavaScript
Tron (repo) JavaScript HTML jQuery CSS
Turmoil # Arcade
datastorm (repo) Active C Apache
Turnabout # Puzzle
turnabout (repo) Halted CoffeeScript
Turok # FPS
TurokEX (repo) Halted C++ GPL2
Turrican # Shmup
Hurrican Playable Halted C++
Makefile needs edits to compile on Linux
Tyrian # Shmup
OpenTyrian (repo) Sporadic C
Tyrian Remake (repo) Sporadic Java GPL2
Ugh! # Arcade
UGH-remake (repo) Halted C
Ultima II: The Revenge of the Enchantress # RPG
UiirJS (repo) Halted JavaScript
Ultima IV # RPG
xu4 (repo) Active C++
Ultima Online # MMORPG
Iris2 (repo) Playable Halted
Ultima VI # RPG
The Savage Empire
Martian Dreams
Nuvie (repo) Active C++
Ultima VII # RPG
Exult (repo) Sporadic C++
Ultima VIII # RPG
Pentagram (repo) Sporadic C++
Uncharted Waters # Adventure Strategy RPG Alternate Historical
Uncharted waters 2 remake (repo) Active Java GPL2
Uninvited # Adventure
uninvited (repo) Sporadic Inform Artistic
Urban Assault # FPS
UA_source (repo) C++ SDL GPL2
Utopia # TBS
Utopia (repo) Halted JavaScript
Viper # Arcade
viper (repo) Halted CoffeeScript
Vlak # Arcade
Train (repo) Sporadic Java BSD
Warcraft II # RTS
Wargus (repo) Sporadic C++ Lua
Warcraft: Orcs & Humans # RTS
OpenWar (repo) Unplayable Sporadic Go Commercial GPL3
warcraft-remake (repo) Active Java Commercial GPL2
WinWar (repo) Halted C# Commercial
Wario Land 3 # Platform
Wario-Land-3 (repo) Active Python Pygame
Warlords II # TBS
FreeLords (repo) Active Java GPL2
Warrior Kings # RTS
wkbre (repo) Active C++ GPL3
Warzone 2100 # RTS
Warzone 2100 (repo) Active C++
Where in the World Is Carmen Sandiego? (1985) # Puzzle
thiefcatcher (repo) Active C++ GPL3
Willow # Arcade
Willow-Game-Remake (repo) Halted C++
Wing Commander: Privateer # Action Adventure Simulation Sci-Fi
Privateer - Gemini Gold (repo) Sporadic C++
Wizard of Wor # Arcade
KnightOfWor (repo) Active Java GPL3
Wizardry # RPG
Wizardry Legacy (repo) Active C++ GPL3
Wolfenstein 3D # FPS
Spear of Destiny
ECWolf (repo) Active C++
Wolfenstein: Enemy Territory # FPS
ET: Legacy (repo) Active C C++ Lua Commercial
World of Goo # Puzzle
OpenGoo (repo) Unplayable Active
World of Warcraft # MMORPG Fantasy
PseuWoW (repo) Unplayable Halted C C++ GPL2
Can only connect to MaNGOS Servers (FOSS reimplementation of World of Warcraft servers).
X-COM Series # Strategy RTS Turn-Based Tactics Horror Sci-Fi
X-COM: UFO Defense
X-COM: Terror from the Deep
X-COM: Apocalypse
UFO: Enemy Unknown
OpenApoc (repo) Active C++ MIT
OpenXcom (repo) Playable Active C++ GPL3
EU fully playable, TftD in development
UFO2000 (repo) Playable Halted C++
X-It # Puzzle
xit (repo) Halted JavaScript
Xenon 2 Megablast # Shmup
Phavon (repo) Halted C GPL2
XPilot # Arcade
XPilot NG (repo) Halted C GPL2
XQuest # Arcade
XQuest 2 (repo) Pascal Custom
The Zod Engine (repo) Active
Zarch # Action TPS
Ajax3d (repo) Halted JavaScript GPL2
Z Virus (repo) Blitz BASIC
Z Virus V2 (repo) Blitz BASIC
Zombie Apocalypse # Shmup
zombie apocalypse html5 (repo) Halted JavaScript HTML5
Zoop # Puzzle
KZap (repo) Halted C++ GPL2
Zoop (repo) Java
Zork # Adventure
zorkClone (repo) Active Java Apache
Zorkish (repo) Sporadic C++
Zuma # Puzzle
Zaz (repo) Halted C++ GPL3

List of clones

Games which are very similar to or heavily inspired by a game or series.
A-Train # Simulation
FreeTrain (repo) Playable Halted C# Commercial LGPL2
Advance Wars # TBS
Tanks of Freedom (repo) Active Godot Multiplayer Open MIT
Age of Empires # RTS
0 A.D. (repo) Playable Active C++ GPL2
Anno series # RTS
Unknown Horizons (repo) Active Python
Arkanoid # Arcade
Ball And Wall (repo) Active JavaScript MIT
PyBreak360 (repo) Active Python
ARMA series # FPS Modern Military
ARMA: Armed Assault
Operation Flashpoint
Uebergame (repo) Playable Active TorqueScript HLSL GLSL C Torque 3D Open MIT CC0
Artemis: Spaceship Bridge Simulator # Simulation Sci-Fi
Space Nerds In Space (repo) Active C GPL2
Battle Chess # TBS
Brutal Chess (repo) Halted C++ GPL2
Battle City # Arcade
BattleCity2014 (repo) Sporadic C++ Ogre3D EntityX
Battle Isle series # TBS
Advanced Strategic Command (repo) Playable Sporadic C++ GPL2
Crimson Fields (repo) Playable Sporadic C++
Battle Zone # FPS Arcade
BZFlag (repo) Playable Active C++
BeamNG.drive # Simulation
Rigs of Rods (repo) Playable Active C C++ AngelScript Python OGRE3D Engine GPL3
Board Game # Compilation Board Game
VASSAL (repo) Playable Active Java GPL2
Brain Blasters # Puzzle
brainblast (repo) Sporadic C++
Breakout # Arcade
Breakout VR (repo) Sporadic C# ASP GLSL MIT
BRIQUOLO (repo) Halted C++ GPL3
Candy Crush Saga # Puzzle
CookieCrunch (repo) Sporadic Swift As-is
Civilization II # TBS 4X Alternate Historical Management
C-Evo (repo) Playable Delphi PD
Freeciv (repo) Active C GPL2
Play Freeciv! (repo) Active C Java JavaScript AGPL3
online browser game
The Clue! # Adventure
Der Clou! (repo) Sporadic C
Command & Conquer: Generals # RTS Sci-Fi Modern Military
OpenSAGE (repo) Active C#
Company of Heroes series # RTS World War II
Company of Heroes: Opposing Fronts
Company of Heroes: Tales of Valor
Company of Heroes 2
Spring: 1944 (repo) Playable Very Active Lua Spring RTS Engine GPL CC-BY-NC
Gameplay is a mix of Company of Heroes and Supreme Commander
Crazy Machines series # Puzzle Simulation
Crazy Machines: The Wacky Contraptions Game
Crazy Machines 2
The Incredible Machine
The Incredible Machine 2
The Incredible Machine 3
Return of the Incredible Machine: Contraptions
The Incredible Machine: Even More Contraptions
Incredible Toons
The Butterfly Effect (repo) Playable Active C++ Qt Box2D GPL2
Crimsonland # Shmup
Violetland (repo) Playable Active C++ GPL3 CC-BY-SA
Dupocracy (repo) Active HTML5
Diablo # RPG Action Horror Fantasy Medieval
Flare (repo) Active C++ GPL3
Summoning Wars (repo) Active C++ Lua GPL3
Duke Nukem # Platform
Dave Gnukem (repo) Playable Active C++ SDL Open GPL2
Dungeon Keeper # Strategy RTS Horror Fantasy Comedy
OpenDungeons (repo) Active C++
Dungeon Keeper 2 # Simulation RTS
OpenKeeper (repo) Unplayable Active Java JMonkeyEngine Commercial GPL3
Elite # Action Simulation Flight Simulator Sci-Fi
Oolite (repo) Active
Elite II # Action Simulation Flight Simulator Sci-Fi Espionage
Pioneer (repo) Playable Active C++ C Lua GPL3
Escape Velocity # Action Simulation
Endless Sky (repo) Active C++ GPL3
Naev (repo) Active C
Falcon # Simulation
FreeFalcon (repo) Active C++ BSD2
Fall Down # Arcade
ativayeban (repo) Playable Halted C SDL GPL2
Falling Time (repo) Playable Halted C SDL2 GPL2
Fire Power # Action
OpenFire (repo) Active C MIT
Guitar Hero # Rhythm
Performous (repo) Playable Active C++
Stepmania (repo) Playable Active C++ Lua
Guitar Hero # Rhythm
Dance Dance Revolution
Performous (repo) Playable Active C++
Stepmania (repo) Playable Active C++ Lua
Hack # Roguelike
SLASH'EM (repo) Halted C NGPL
Heroes of Might and Magic III # TBS
Ancient Beast (repo) Playable Active JavaScript HTML5 Phaser
Herzog Zwei # RTS
Herzog 3D (repo) Halted GPL2
Infinity Loop # Puzzle
IO Reboot (repo) Playable Complete C# Unity Open MIT
Legend of Zelda # Action Adventure
Fanwor (repo) Playable Active C SDL GPL2
Open Zelda (repo) Playable Halted C++
The Legend Of Zelda - Navi's Quest (repo) Complete C++ SDL
The Legend Of Zelda - Oni Link Begins (repo) Complete C++
The Legend Of Zelda - Picross (repo) Complete C++
The Legend Of Zelda - Return Of The Hylan (repo) Complete C++
The Legend Of Zelda - Time To Triumph (repo) Complete C++
Lemmings # Puzzle
Lemmings.ts (repo) Playable Active TypeScript MIT
Lemmini (repo) Playable Active Java Apache 2.0
Lemmix (repo) Playable Halted Delphi
Lix (repo) Playable Halted C++ Allegro
LixD (repo) Playable Active D Allegro Multiplayer Open CC0
Updated port of Lix to D and Allegro 5
Pingus (repo) Playable Sporadic C++ SDL2, boost (partial) Open GPL3
Little Fighter 2 # Fighting
F.LF (repo) Playable Complete JavaScript Swappable Creative Commons
The Lost Vikings # Platform
freeVikings (repo) Sporadic Ruby GPL2
Lotus Esprit Turbo Challenge # Racing
RacerJS (repo) Halted JavaScript MIT
Magic: The Gathering Online # Strategy TBS Card Game Fantasy
Forge (repo) Playable Very Active Java
Magarena (repo) Playable Very Active Java
XMage (repo) Playable Very Active Java
Mario Kart # Racing
SuperTuxKart (repo) Playable Active C++
Master of Monsters # TBS Fantasy
The Battle for Wesnoth (repo) Active C++ C Java Python Lua GPL2
Master of Orion Series # TBS 4X Sci-Fi
Master of Orion 2
FreeOrion (repo) Sporadic C++ Python Open GPL2 CC-BY-SA
Microsoft Flight Simulator # Simulation
FlightGear (repo) Active C++
Microsoft Train Simulator # Simulation
OpenRails (repo) Active C#
Missile Command # Arcade
ICBM3D (repo) Halted C
Missile Command # Arcade
ICBM3D (repo) Halted C
Mortal Kombat # Fighting Fantasy
OpenMortal (repo) Sporadic C++
Natural Selection # FPS
Tremulous (repo) Halted C
Unvanquished (repo) Active C
Nexuiz # FPS
Xonotic (repo) Playable Active C
Omega Race # Arcade
Omega Race Remake (repo) Sporadic C#
Torrega Race (repo) Playable Halted Lua LÖVE GPL3
Paradroid # Shmup Puzzle Fantasy Sci-Fi
FreedroidRPG (repo) Playable Active Python C Lua GPL2
Pizza Tycoon # Simulation
Pizza Business (repo) Halted C++ GPL2
Punch-Out!! # Fighting Sports Boxing Comedy
THREEPunchOut (repo) Active JavaScript
Puzzle Bobble # Puzzle Arcade
Frozen Bubble (repo) Sporadic Perl
RPG Maker # RPG
EasyRPG Player (repo) Playable Active C++ GPL3
2000/2003 interpreter
mkxp (repo) Playable Sporadic C++ GPL2
RGSS (XP, VX, VX Ace) implementation
The Settlers # RTS
The Settlers II
Widelands (repo) Active C++ Lua Python
Ship Simulator series # Simulation
Ship Simulator 2006
Ship Simulator 2008
Ship Simulator Extremes
Bridge Command (repo) Playable Active C++ Irrlicht GPL2
Simcity # Simulation Management
3d.city (repo) Halted JavaScript HTML5 GPL3
Lincity (repo) Halted C GPL
LinCity-NG (repo) Active C++ GPL2
Micropolis (repo) Halted C++ Python GPL
MicropolisJS (repo) Halted JavaScript HTML5 GPL3
OpenCity (repo) Halted C++ GPL2
SimCity 2000 # Simulation
OpenSC2K (repo) Active JavaScript
SkyRoads # Platform
Orbit-Hopper (repo) Halted C++ GPL2
Snake # Arcade
Gusty's Serpents (repo) Halted C++ GPL2
Sokoban # Puzzle
CavePacker (repo) Playable Active C SDL GPL3
Sonic the Hedgehog # Platform
Open Surge (repo) Sporadic C
Sonic Robo Blast 2 (repo) Active C Lua
Story of Seasons series # Simulation Anime
Harvest Moon
Harvest Cynthia (repo) Unplayable Sporadic C++ GPL3
Project name undecided and may change in the future.
Super Hexagon # Rhythm
Open Hexagon (repo) Playable Active C++
Super Mario # Platform
Super Mario Bros And Level Editor in C# (repo) Active C# MIT
Super Mario Bros With SFML in C# (repo) Active C# GPL2
Super Mario War (repo) Playable Halted C++
SuperTux (repo) Playable Active C++ SDL2, boost (partial) Open GPL3
Tetris # Puzzle Arcade
4DTris (repo) Halted C GPL2
Hextris (repo) Active JavaScript GPL3
Tetris Attack # Puzzle Arcade
Block Attack - Rise of the Blocks (repo) Active C++ SDL2 GPL
Thief # Action Adventure Crime Fantasy
The Dark Mod (repo) Playable Active C++
Thrust # Arcade
Super Transball 2 (repo) Complete C++ GPL3
Transball GL (repo) Halted C++ GPL2
Toobz # Puzzle
Marblez (repo) Playable C# Unity MIT
TrackMania # Racing
Stunt Rally (repo) Playable Active C C++ OGRE3D Engine VDrift Engine GPL3
Transport Tycoon # Strategy Simulation Management
Transport Tycoon Deluxe
Simutrans (repo) Playable Active C++ Artistic
Tribal Hero # MMORPG
Danger Zone (repo) Unplayable Active Java
Ugh! # Arcade
CaveExpress (repo) Playable Active C SDL GPL3
VVVVVV # Puzzle Platform
WWW (repo) Halted JavaScript HTML5 GPL3
Warcraft II # RTS
Dark Oberon (repo)
Wipeout # Racing
Core Breach (repo)
Ecksdee (repo) Halted C++ GPL2
H-Craft Championship (repo) Active C++ ZLIB
HexGL (repo) Active HTML5 WebGL MIT
RGP - Racing Game Project (repo) Halted Python Blender
The Rush (repo) Halted C++ GPL2
Wolfenstein 3D # FPS
Spear of Destiny
Voxelstein 3D (repo) Halted C++ MIT
Worms Series # TBS
Hedgewars (repo) Active Lua C C++ Pascal Haskell SDL QT
WarMUX (repo) Sporadic C++
X-COM Series # Strategy RTS Turn-Based Tactics Horror Sci-Fi
X-COM: UFO Defense
X-COM: Terror from the Deep
X-COM: Apocalypse
UFO: Enemy Unknown
Project: Xenocide (repo) Halted C++ GPL2
UFO: Alien Invasion (repo) Active C
X-Force: Fight For Destiny (repo) Sporadic Delphi Kylix GPL2
Xenowar (repo) Playable Halted C++