Action games 1 款
Adventure games 6 款
ScummVM
A program which allows you to run certain classic graphical adventure and role-playing games.
The Legend of Zelda: Twilight Princess
A reverse engineering project to decompile Twilight Princess into human-readable and modifiable source code.
Business and Tycoon games 5 款
City-Building games 8 款
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.
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.
First-Person games 33 款
.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.
Liblast
A Libre Multiplayer FPS Game built with Godot 4 engine and a fully open-source toolchain.
Xonotic
An addictive arena-style first person shooter with crisp movement and a wide array of weapons.
Aliens Versus Predator) game source ports
AvP Forever
Project focuses on maintenance of available source code for Aliens versus Predator (1999) game.
NakedAVP
A port of Aliens vs Predator Classic (2000) to modern systems, based on the icculus port for Linux, macOS and Windows using SDL3 (
Build engine) [[source]](https://advsys.net/ken/buildsrc) based games
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.
NBlood
Reverse-engineered ports of Build games using EDuke32 engine technology and development principles (NBlood/Rednukem/PCExhume d)
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](https://en.wikipedia.org/wiki/Doom_(1993_video_game))
[Doom 3](https://en.wikipedia.org/wiki/Doom_3) BFG Edition
[Quake](https://en.wikipedia.org/wiki/Quake_(video_game))
Catacomb 3-D
[Doom](https://en.wikipedia.org/wiki/Doom_(1993_video_game))
[Quake](https://en.wikipedia.org/wiki/Quake_(video_game))
Wolfenstein 3D
Platformers 9 款
Commander Keen
[Fish Folk](https://fishfolk.org) Games
Rigel Engine
This project is a re-implementation of the game Duke Nukem II, originally released by Apogee Software in 1993 for MS-DOS.
Puzzle games 3 款
BlockOut II
A free adaptation of the original BlockOut® DOS game edited by California Dreams in 1989.
Racing games 12 款
Rigs of Rods
An open-source physics sandbox simulation game that can simulate the motion and deformation of vehicles in real time.
RVGL
A cross-platform rewrite / port of Re-Volt that runs natively on both Windows and GNU/Linux.
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.
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.
Real-Time strategies 21 款
OpenAge
A free (as in freedom) cross-platform RTS game engine that provides the mechanics of Age of Empires.
Standard Of Iron
A modern real-time strategy (RTS) game engine built with C++20, Qt 6, and OpenGL 3.3 Core.
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.
Blizzard Entertainment Games Re-Implementations
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.
[Tiberian Dawn](https://en.wikipedia.org/wiki/Command_%26_Conquer_(1995_video_game))
Roguelikes 7 款
Brogue CE
Brogue is a minimalist, turn-based, procedurally-generated roguelike game where you descend a perilous dungeon to retrieve the Amulet of Yendor.
Dungeon Crawl Stone Soup
An open source roguelike adventure through dungeons filled with dangerous monsters in a quest to find the mystifyingly fabulous Orb of Zot.
Role-Playing games 23 款
Naev
A 2d action/rpg space game that combines elements from the action, rpg and simulation genres.
OpenMW
A free, open source, and modern engine which re-implements and extends the 2002 Gamebryo engine for the open-world role-playing game The Elder Scrolls III: Morrowind.
reone
A free and open source game engine, capable of running Star Wars: Knights of the Old Republic and its sequel, The Sith Lords.
Severed Chains
The Legend of Dragoon decompiled, reverse engineered, and ported to PC/Mac/Linux/Steam Deck.
Ultima VII: Revisited
A replacement engine for Ultima VII that presents the game in 3D and fixes various issues with the game.
Diablo) Re-Implementations
DevilutionX
A port of Diablo) and Hellfire that strives to make it simple to run the game while providing engine improvements, bugfixes, and some optional quality of life features.
Sandbox games 1 款
Shoot 'em up games 2 款
SDL Sopwith
A port of the classic biplane shoot ‘em-up “Sopwith” to run on modern computers and operating systems.
Sport games 2 款
Third-Person games 8 款
Tower Defence games 1 款
Turn-Based strategies 13 款
FreeCol
A turn-based strategy game based on the old gameColonization, and similar to Civilization).
OpenXcom
An open-source clone of the popular UFO: Enemy Unknown and X-COM: Terror From the Deep video games by MicroPros.
Other lists 9 款
Awesome Game Remakes
Awesome Open Source Games
Games on GitHub
Libre Game Wiki
List of (interesting) FOSS game engine replacement projects
List of Open Source Games
Mac Source Ports
Open Source Game Clones
Wikipedia list open-source video games
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