bobeff/open-source-games

Open source games

This is a list of different open-source video games and commercial video games open-source remakes.

Table of contents

• Action games
• Adventure games
• Business and Tycoon games
• City-Building games
• First-Person games
• Platformers
• Puzzle games
• Racing games
• Real-Time strategies
• Roguelikes
• Role-Playing games
• Sandbox games
• Shoot 'em up games
• Sport games
• Third-Person games
• Tower Defense games
• Turn-Based strategies
• Other lists

Action games

• Hypersomnia - Competitive top-down shooter with extreme dynamics and pixely nostalgia. Comes with a built-in map Editor. [[source]](https://github.com/TeamHypersomnia/Hypersomnia)

Adventure games

• Dead Ascend - A zombie adventure, escape room, with twists. [[source]](https://github.com/larpon/DeadAscend)
• Endless Sky - Space exploration, trading, and combat game. [[source]](https://github.com/endless-sky/endless-sky)
• Pioneer - A space adventure game set in our galaxy at the turn of the 33rd century. [[source]](https://github.com/pioneerspacesim/pioneer)
• ScummVM - A program which allows you to run certain classic graphical adventure and role-playing games. [[source]](https://github.com/scummvm/scummvm)
• The Legend of Zelda: Twilight Princess - A reverse engineering project to decompile Twilight Princess into human-readable and modifiable source code. [[source]](https://github.com/zeldaret/tp)
• Zelda 3 - A reverse engineered clone of The Legend of Zelda: A Link to the Past. [[source]](https://github.com/snesrev/zelda3)

Business and Tycoon games

• CorsixTH - Open source clone of Theme Hospital. [[source]](https://github.com/CorsixTH/CorsixTH)
• Hurry Curry! - Cooperative fast-paced multiplayer cooking game. [[source]](https://codeberg.org/hurrycurry/hurrycurry)
• OpenLoco - An open source re-implementation of Chris Sawyer's Locomotion. [[source]](https://github.com/OpenLoco/OpenLoco)
• OpenRCT2 - An open-source re-implementation of RollerCoaster Tycoon 2. [[source]](https://github.com/OpenRCT2/OpenRCT2)
• OpenTTD - An open source simulation game based upon Transport Tycoon Deluxe. [[source]](https://github.com/OpenTTD/OpenTTD)

City-Building games

• Akhenaten - A strategic city-building game, based on assets and gameplay mechanics from Pharaoh + Cleopatra) title, where players take on the role of a ruler and mayor of ancient Egyptian civilization. [[source]](https://github.com/dalerank/Akhenaten)
• Citybound - A city building game that uses microscopic models to vividly simulate the organism of a city arising from the interactions of millions of individuals. [[source]](https://github.com/citybound/citybound)
• Cytopia - A free, open source retro pixel-art city building game. [[source]](https://github.com/CytopiaTeam/Cytopia)
• Egregoria - Egregoria is an indie city builder, mostly inspired by Cities: Skylines. [[source]](https://github.com/Uriopass/Egregoria)
• IsoCity - Isometric city-building simulation game built with NextJS, TypeScript and TailwindCSS. [[source]](https://github.com/amilich/isometric-city)
• Julius - An open source re-implementation of Caesar III. [[source]](https://github.com/bvschaik/julius)
• micropolisJS - A handmade Javascript port of the open-source city simulator Micropolis. [[source]](https://github.com/graememcc/micropolisJS)
• Unknown Horizons - A 2D realtime strategy simulation with an emphasis on economy and city building.
• Original: [[source]](https://github.com/unknown-horizons/unknown-horizons) Engine: FIFE [[source]](https://github.com/fifengine/fifengine)
• Godot port: [[source]](https://github.com/unknown-horizons/godot-port) Engine: Godot [[source]](https://github.com/godotengine/godot)

First-Person games

• .kkrieger - A first-person shooter video game created by German demogroup .theprodukkt (a former subdivision of Farbrausch), which won first place in the 96k game competition at Breakpoint) in April 2004. [[source]](https://github.com/farbrausch/fr_public/tree/master/werkkzeug3_kkrieger)
• Anarch - This isn't a 90s style retro shooter, this is a 90s shooter. [[source]](https://gitlab.com/drummyfish/anarch)
• AssaultCube - A FREE, multiplayer, first-person shooter game. [[source]](https://github.com/assaultcube/AC) Engine: CUBE [[source]](https://github.com/bsegovia/cube)
• Cube 2: Sauerbraten - A free multiplayer & singleplayer first person shooter. [[source]](https://sourceforge.net/projects/sauerbraten) Engine: CUBE [[source]](https://github.com/bsegovia/cube)
• Descent 3 - A first-person shooter video game/ [[source]](https://github.com/kevinbentley/Descent3)
• Liblast - A Libre Multiplayer FPS Game built with Godot 4 engine and a fully open-source toolchain. [[source]](https://codeberg.org/liblast/liblast) Engine: Godot [[source]](https://github.com/godotengine/godot)
• Red Eclipse - An old-school arena shooter for the modern age. [[source]](https://github.com/redeclipse/base) Engine: CUBE [[source]](https://github.com/bsegovia/cube)
• Surreal Engine - Unreal Tournament Engine Reimplementation. [[source]](https://github.com/dpjudas/SurrealEngine)
• The Dark Mod - First-person stealth video game. [[source]](https://svn.thedarkmod.com/publicsvn/darkmod_src/trunk)
• Xonotic - An addictive arena-style first person shooter with crisp movement and a wide array of weapons. [[source]](https://gitlab.com/xonotic/xonotic)

Aliens Versus Predator) game source ports

• AvP Forever - Project focuses on maintenance of available source code for Aliens versus Predator (1999) game. [[source]](https://github.com/dreamer/avp-forever)
• avpmp - Fork of the original AvP port for Linux, expanded with multiplayer and other features. [[source]](https://github.com/mbait/avpmp)
• NakedAVP - A port of Aliens vs Predator Classic (2000) to modern systems, based on the icculus port for Linux, macOS and Windows using SDL3 ([[source]](https://github.com/libsdl-org/SDL)). [[source]](https://github.com/atsb/NakedAVP)

Build engine) [[source]](https://advsys.net/ken/buildsrc) based games

• Duke Nukem 3D - By 3D Realms Entertainment, Inc. [[source]](https://github.com/videogamepreservation/dukenukem3d)
• Shadow Warrior - Official source release for Shadow Warrior). [[source]](https://github.com/Azarien/shadow-warrior)

Source Ports and Re-Implementations

• BuildGDX - [[source]](https://github.com/vogonsorg/BuildGDX)
• EDuke32 - The official EDuke32 Git repository: home to the source code to EDuke32, Ion Fury, VoidSW, Mapster32, and related projects based on the Build Engine.
• JFDuke3D - Port of the 3D Realms game Duke Nukem 3D [[source]](https://github.com/jonof/jfduke3d)
• JFShadowWarrior - Port of the 3D Realms game Shadow Warrior).
• NBlood - Reverse-engineered ports of Build games using EDuke32 engine technology and development principles (NBlood/Rednukem/PCExhume d) [[source]](https://github.com/NBlood/NBlood)
• NuBuildGDX - A fork of BuildGDX aiming for stability, bug fixing and performance. [[source]](https://github.com/atsb/NuBuildGDX)
• Raze - Build engine port backed by GZDoom tech. Currently supports Duke Nukem 3D, Blood), Shadow Warrior), Redneck Rampage and Powerslave/Exhumed.

id Software Games

• Doom) - [[source]](https://github.com/id-Software/DOOM)
• DOOM64-RE - Complete reverse engineering of Doom 64. [[source]](https://github.com/Erick194/DOOM64-RE)
• Doom 3 BFG Edition - [[source]](https://github.com/id-Software/DOOM-3-BFG)
• Quake) - [[source]](https://github.com/id-Software/Quake)
• Quake II - [[source]](https://github.com/id-Software/Quake-2)
• Quake III Arena - [[source]](https://github.com/id-Software/Quake-III-Arena)
• Wolfenstein 3D - [[source]](https://github.com/id-Software/wolf3d)

Source Ports and Re-Implementations

• Catacomb 3-D
• CatacombGL - A source port of Catacomb 3D and the Catacomb Adventure series. [[source]](https://github.com/ArnoAnsems/CatacombGL)
• Doom)
• Chocolate Doom - A Doom source port that accurately reproduces the experience of Doom as it was played in the 1990s. [[source]](https://github.com/chocolate-doom/chocolate-doom)
• ZDoom - A feature centric port for all Doom engine games. [[source]](https://github.com/UZDoom/UZDoom)
• Quake)
• Chocolate Quake - A purist Quake source port that restores the original look and feel of v1.09 and earlier. [[source]](https://github.com/Henrique194/chocolate-quake)
• FTEQW - Powerful engine for playing and modding idTech based games. [[source]](https://github.com/fte-team/fteqw)
• Wolfenstein 3D
• ECWolf - A port of the Wolfenstein 3D engine based of Wolf4SDL. [[source]](https://bitbucket.org/ecwolf/ecwolf)
• Wolf4SDL - An open-source port of id Software's classic first-person shooter Wolfenstein 3D to the cross-platform multimedia library SDL. [[source]](https://github.com/lazd/wolf4sdl)

Platformers

• Commander Keen
• Commander-Genius - An open-source interpreter for the

Commander Keen (1-6, Dreams) and Cosmo's Cosmic series which allows you to play the original episodes and some of the mods made for them. [[source]](https://gitlab.com/Dringgstein/Commander-Genius)

• Commander Keen in Keen Dreams - A side-scrolling platform video game developed by id Software. [[source]](https://github.com/keendreams/keen)
• Omnispeak - An open-source re-implementation of Commander Keen in Goodbye Galaxy. [[source]](https://github.com/sulix/omnispeak)
• DDraceNetwork - Cooperative 2D online platformer. [[source]](https://github.com/ddnet/ddnet)
• Fish Folk Games
• Jumpy - A tactical 2D shooter. [[source]](https://github.com/fishfolk/jumpy) Engine: Bevy [[source]](https://github.com/bevyengine/bevy)
• Punchy - A 2.5D side-scroller beatemup, made in Bevy. Engine: Bevy [[source]](https://github.com/bevyengine/bevy)
• Frogatto & Friends - An action-adventure platformer game, starring a certain quixotic frog. [[source]](https://github.com/frogatto/frogatto) Engine: Anura [[source]](https://github.com/anura-engine/anura)
• OpenGOAL - This project is to port Jak & Daxter Series to PC. [[source]](https://github.com/water111/jak-project)
• Rigel Engine - This project is a re-implementation of the game Duke Nukem II, originally released by Apogee Software in 1993 for MS-DOS. [[source]](https://github.com/lethal-guitar/RigelEngine)
• Sonic Robo Blast 2 - A 3D open-source Sonic the Hedgehog fangame built on Doom. [[source]](https://git.do.srb2.org/STJr/SRB2)
• Super Mario 64 - A full decompilation of Super Mario 64. [[source]](https://github.com/n64decomp/sm64)
• VVVVVV - [[source]](https://github.com/TerryCavanagh/VVVVVV)

Puzzle games

• BlockOut II - A free adaptation of the original BlockOut® DOS game edited by California Dreams in 1989. [[source]](https://sourceforge.net/projects/blockout/files/blockout/BlockOut%202.5)
• Portal64 - A demake (remake for an older platform) of Portal) for the Nintendo 64. [[source]](https://github.com/mwpenny/portal64-still-alive)
• Whatajong - [[source]](https://github.com/masylum/whatajong)

Racing games

• Dust Racing 2D - A traditional top-down car racing game including a level editor. [[source]](https://github.com/cflavio/yorg)
• ManiaDrive - A free clone of TrackMania, the great game from Nadéo studio. [[source]](http://maniadrive.raydium.org/index.php?downloads=yes) Engine: Raydium [[source]](https://raydium.org/data.php)
• Rigs of Rods - An open-source physics sandbox simulation game that can simulate the motion and deformation of vehicles in real time. [[source]](https://github.com/RigsOfRods/rigs-of-rods) Engine: OGRE [[source]](https://github.com/OGRECave) UI: Dear ImGui [[source]](https://github.com/ocornut/imgui)
• RVGL - A cross-platform rewrite / port of Re-Volt that runs natively on both Windows and GNU/Linux. [[source]](https://gitlab.com/re-volt)
• Speed Dreams - A free and open source motorsport simulator. [[source]](https://forge.a-lec.org/xavi/speed-dreams-code)
• Stunt Rally - 3D racing game with Sci-Fi elements and own Track Editor. [[source]](https://github.com/stuntrally/stuntrally3)
• SuperTuxKart - A free kart racing game. It focuses on fun and not on realistic kart physics. [[source]](https://github.com/supertuxkart/stk-code)
• TORCS - The Open Racing Car Simulator - A highly portable multi platform car racing simulation. It is used as ordinary car racing game, as AI racing game and as research platform. [[source]](https://sourceforge.net/projects/torcs)
• Trigger Rally - A fast-paced single-player racing game for Linux and Windows. [[source]](https://sourceforge.net/projects/trigger-rally)
• VDrift - A cross-platform, open source driving simulation made with drift racing in mind. [[source]](https://github.com/VDrift/vdrift)
• Yorg - Yorg (Yorg's an Open Racing Game) is a free open source racing game developed by Ya2 using Panda3D for Windows, OSX and Linux. [[source]](https://github.com/cflavio/yorg) Engine: Panda3D [[source]](https://github.com/panda3d/panda3d)
• wipEout - This is a re-implementation of the 1995 PSX game Wipeout). [[source]](https://github.com/phoboslab/wipeout-rewrite)

Real-Time strategies

• 0 A.D. - A free, open-source game of ancient warfare. [[source]](https://gitea.wildfiregames.com/0ad/0ad)
• BAR - Beyond All Reason. [[source]](https://github.com/beyond-all-reason/Beyond-All-Reason) Engine: Spring [[source]](https://github.com/spring/spring)
• Dune II The Maker - A Dune 2 remake. [[source]](https://github.com/stefanhendriks/Dune-II---The-Maker)
• Freeserf.net - Аn authentic remake of the game The Settlers I by BlueByte. [[source]](https://github.com/Pyrdacor/freeserf.net)
• Keeper FX - An open-source remake and fan expansion of Dungeon Keeper. [[source]](https://github.com/dkfans/keeperfx)
• Mindustry - A sandbox tower-defense game. [[source]](https://github.com/Anuken/Mindustry)
• OpenAge - A free (as in freedom) cross-platform RTS game engine that provides the mechanics of Age of Empires. [[source]](https://github.com/SFTtech/openage)
• OpenHV - An Open Source Pixelart Science-Fiction Real-Time-Strategy game. [[source]](https://github.com/OpenHV/OpenHV)
• OpenRA - Command & Conquer, Dune 2000 and Red Alert rebuild for the Modern Era. [[source]](https://github.com/OpenRA/OpenRA)
• Permafrost Engine - An OpenGL 3.3 Real Time Strategy game engine written in C. [[source]](https://github.com/eduard-permyakov/permafrost-engine)
• Standard Of Iron - A modern real-time strategy (RTS) game engine built with C++20, Qt 6, and OpenGL 3.3 Core. [[source]](https://github.com/djeada/Standard-of-Iron)
• Warzone 2100 - A free, open source, 3D real-time strategy game with a story-driven single-player campaign, online multi-player, offline skirmish, and more. [[source]](https://github.com/Warzone2100/warzone2100)
• Widelands - A free, open source real-time strategy game. [[source]](https://github.com/widelands/widelands)
• Zero-K - RTS game with physical projectiles, smart units

and a powerful UI. [[source]](https://github.com/ZeroK-RTS/Zero-K) Engine: Spring [[source]](https://github.com/spring/spring)

Blizzard Entertainment Games Re-Implementations

• OpenBW - Free and open-source Best Wargame. [[source]](https://github.com/OpenBW/openbw) Brood War API [[source]](https://github.com/OpenBW/bwapi)
• Strategus Engine Games [[source]](https://github.com/Wargus/stratagus)
• War1gus - A re-implementation of Warcraft: Orcs & Humans that that can be played on modern platforms. [[source]](https://github.com/Wargus/war1gus)
• Wargus - Importer and scripts for Warcraft II: Tides of Darkness, the expansion Beyond the Dark Portal, and Aleonas Tales. [[source]](https://github.com/Wargus/wargus)
• Wyrmsun - A strategy game which features elements of mythology, history and fiction. [[source]](https://github.com/Andrettin/Wyrmsun)
• Stargus - Importer and scripts for Starcraft. [[source]](https://github.com/Wargus/stargus)
• Warsmash Mod Engine - An emulation engine to improve Warcraft III modding. [[source]](https://github.com/Retera/WarsmashModEngine) Engine: LibGDX [[source]](https://github.com/libgdx/libgdx)

Westwood Studios and EA Games from Command & Conquer Series

• Command & Conquer Remastered Collection - TiberianDawn.dll, RedAlert.dll and the Map Editor for the Command & Conquer Remastered Collection. [[source]](https://github.com/electronicarts/CnC_Remastered_Collection)
• Generals - Command & Conquer Generals, and its expansion pack Zero Hour. [[source]](https://github.com/electronicarts/CnC_Generals_Zero_Hour)
• Red Alert - [[source]](https://github.com/electronicarts/Cn