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]

Adventure games

• Pioneer - A space adventure game set in our galaxy at the turn of the 33rd century. [source]

• ScummVM - A program which allows you to run certain classic graphical adventure and role-playing games. [source]

• The Legend of Zelda: Twilight Princess - A reverse engineering project to decompile Twilight Princess into human-readable and modifiable source code. [source]

• Zelda 3 - A reverse engineered clone of Zelda 3 - A Link to the Past. [source]

Business and Tycoon games

• OpenRCT2 - An open-source re-implementation of RollerCoaster Tycoon 2. [source]

• OpenTTD - An open source simulation game based upon Transport Tycoon Deluxe. [source]

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]

• 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]

• Cytopia - A free, open source retro pixel-art city building game. [source]

• Egregoria - Egregoria is an indie city builder, mostly inspired by Cities:Skylines. [source]

• micropolisJS - A handmade Javascript port of the open-source city simulator Micropolis. [source]

• Unknown Horizons - A 2D realtime strategy simulation with an emphasis on economy and city building. [source] [engine-source] [godot-port]

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]

• Anarch - This isn't a 90s style retro shooter, this is a 90s shooter. [source]

• Cube 2: Sauerbraten - A free multiplayer & singleplayer first person shooter. [source]

• Descent 3 - A first-person shooter video game/ [source]

• DOOM - [source]

• DOOM64-RE - Complete reverse engineering of Doom 64. [source]

• Doom 3 BFG Edition - [source]

• Liblast - A Libre Multiplayer FPS Game built with Godot 4 engine and a fully open-source toolchain. [source] [engine source]

• The Dark Mod - First-person stealth video game. [source]

• Quake - [source]

• Quake 2 - [source]

• Quake III Arena - [source]

• Wolfenstein 3D - [source]

Platformers

• Commander Keen in Keen Dreams - A side-scrolling platform video game developed by id Software. [source]

• DDraceNetwork - Cooperative 2D online platformer. [source]

• Fish Folk: Jumpy - A tactical 2D shooter. [source] [engine source]

• OpenGOAL - This project is to port Jak & Daxter Series to PC. [source]

• 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]

• Sonic Robo Blast 2 - A 3D open-source Sonic the Hedgehog fangame built on Doom. [source]

• Super Mario 64 - A full decompilation of Super Mario 64. [source]

Puzzle games

• BlockOut II - A free adaptation of the original BlockOut® DOS game edited by California Dreams in 1989. [source]

• Portal64 - A demake (remake for an older platform) of Portal for the Nintendo 64. [source]

Racing games

• wipEout - This is a re-implementation of the 1995 PSX game wipEout. [source]

Real-Time strategies

• 0 A.D. - A free, open-source game of ancient warfare. [source]

• BAR - Beyond All Reason. [source] [engine] [engine source]

• Dune II The Maker - A Dune 2 remake. [source]

• Freeserf.net - Аn authentic remake of the game The Settlers I by BlueByte. [source]

• Keeper FX - An open-source remake and fan expansion of Dungeon Keeper. [source]

• Mindustry - A sandbox tower-defense game. [source]

• OpenAge - A free (as in freedom) cross-platform RTS game engine that provides the mechanics of Age of Empires. [source]

• OpenHV - An Open Source Pixelart Science-Fiction Real-Time-Strategy game. [source]

• OpenRA - Command & Conquer, Dune 2000 and Red Alert rebuild for the Modern Era. [source]

• Permafrost Engine - An OpenGL 3.3 Real Time Strategy game engine written in C. [source]

• Widelands - A free, open source real-time strategy game. [source]

• Zero-K - RTS game with physical projectiles, smart units and a powerful UI. [source] [engine] [engine source]

Roguelikes

• Cataclysm: Dark Days Ahead - A turn-based survival game set in a post-apocalyptic world. [source]

• 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. [source]

• NetHack - Single player dungeon exploration game. [source]

• Meritous - An action-adventure dungeon crawl game. [source]

• Pixel Dungeon - Traditional roguelike game with pixel-art graphics and simple interface. [source] The game also has a lot of forks that add their own features, difficulty scaling like Shattered PD, Summoning PD.

Role-Playing games

• Ambermoon.net - A full C# rewrite of Ambermoon. [source]

• Daggerfall Unity - An open source recreation of Daggerfall in the Unity engine. [source]

• 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. [source]

• Fallout Community Edition - A fully working re-implementation of Fallout. [source]

• Fallout 2 Community Edition - A fully working re-implementation of Fallout 2. [source]

• Kandria - An action RPG made in Common Lisp. [source] [engine source]

• Naev - A 2d action/rpg space game that combines elements from the action, rpg and simulation genres. [source]

• Oolite - An open-world space opera. [source]

• OpenEnroth - Might and Magic VI-VIII engine remake using original data & code. [source]

• 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. [source]

• OpenNox - An open-source community collaboration project extending the Nox engine. [source]

• reone - A free and open source game engine, capable of running Star Wars: Knights of the Old Republic and its sequel, The Sith Lords. [source]

• Space Station 14 – Open-source remake of Space Station 13. [source]

• Veloren - multiplayer voxel RPG written in Rust. [source]

Sandbox games

• Minosoft - An open source minecraft client, written from scratch in kotlin (and java). [source]

Shoot 'em up games

• SDL Sopwith - A port of the classic biplane shoot ‘em-up “Sopwith” to run on modern computers and operating systems. [source]

Sport games

• Open Golf - A cross-platform minigolf game written in C. [source]

Third-Person games

• CroftEngine - An open-source Tomb Raider 1 engine remake. [source]

• Lugaru: The Rabbit's Foot - Cross-platform, open-source 3D action game. [soruce]

• OpenLara - Classic Tomb Raider open-source engine [source]

• OpenRW - A Grand Theft Auto III re-implementation. [source]

• Overgrowth - The sequel to Lugaru. [soruce]

• RE3 - The fully reversed source code for GTA III and GTA VC. [source]

Tower Defense games

• Izowave - Your task is to survive on chosen planet as many waves