Open Source Games Projects
Open source video games, game engines, and game-development tools. Includes reimaginings of classic commercial titles, modern indie projects, and engines that can be used to build new games.
0 A.D.
A free, open-source real-time strategy game about ancient civilizations, with single-player, multiplayer, and modding support.
Age of Empires
Battle for Wesnoth
Free, open source turn-based strategy game set in a high-fantasy world, with single-player campaigns and online multiplayer.
Heroes of Might and Magic
Cataclysm-DDA
A deep, turn-based open-world survival game set in a post-apocalyptic world ravaged by zombies and catastrophe.
Project Zomboid
Endless Sky
A 2D space exploration, trading, and combat game inspired by the classic Escape Velocity series.
Escape Velocity
Freeciv
A free, open-source empire-building strategy game inspired by Civilization, playable in single-player or online.
Civilization
Mindustry
Open source automation tower defense RTS — build factories, mine resources, and defend your core against waves of enemies.
Factorio
OpenDiablo2
An open-source reimplementation of Diablo II's game engine built in Go, with a cross-platform client and modding support.
Diablo II
OpenRA
Open source game engine that reimplements early Westwood classics including Command & Conquer: Red Alert, Tiberian Dawn, and Dune 2000.
Command & Conquer
OpenRCT2
An open-source reimplementation of RollerCoaster Tycoon 2 that expands the original with new features, rides, and multiplayer.
RollerCoaster Tycoon
OpenTTD
An open-source simulation game based on Transport Tycoon Deluxe, letting you build and manage a vast transport empire.
Transport Tycoon
SuperTux
A classic open-source side-scrolling platformer starring Tux the penguin, inspired by the original Super Mario games.
Super Mario
SuperTuxKart
A free, open-source kart racing game featuring Tux and friends, with single-player, multiplayer, and online modes.
Mario Kart
Unciv
An open-source, cross-platform remake of Civilization V that runs on Android and desktop with full mod support.
Civilization
Veloren
An open-world, voxel-based multiplayer RPG inspired by Cube World, built with the Rust programming language.
Cube World
Widelands
A free, open-source real-time strategy game inspired by The Settlers, focused on building economies and thriving settlements.
The Settlers
openage
A free, open-source engine and community project recreating Age of Empires II with a modern C++ and Python codebase.
Age of Empires
shapez.io
Open source base-building and factory-automation puzzle game inspired by Factorio — extract, cut, rotate, and combine shapes on an infinite map.
Factorio