Browse free open source Game Engines and projects below. Use the toggles on the left to filter open source Game Engines by OS, license, language, programming language, and project status.
Every creative journey starts with Unity Hub
Godot is a powerful cross-platform game engine
A modern, cross-platform Quake game engine based on FitzQuake.
Open source reimplementation of GTA San Andreas game engine in Unity
DOOM / Heretic / Hexen source port with enhanced graphics and UI
Ct.js is a desktop game engine that makes learning programming fun
GemRB is a portable open-source implementation of the Infinity Engine
Magic Another Game Engine
Injectable LUA scripting system, SDK generator, live property editor
Fast and lightweight JavaScript game engine built on WebGL and glTF
Paintown is a 2d fighting game engine.
Multi Theft Auto is a game engine
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Open source clone of the Age of Empires II engine
Open source voxel game engine with support for survival and crafting
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Real Time Strategy game engine supporting early Westwood classics
A retro game engine for Python
Improved version of the X-Ray Engine, the game engine
dhewm 3 main repository