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.
Open source reimplementation of GTA San Andreas game engine in Unity
An open-source, feature-packed alternative bootstrapper for Roblox.
Godot is a powerful cross-platform game engine
Multi Theft Auto is a game engine
Open source clone of the Age of Empires II engine
RPG Maker 2000/2003 and EasyRPG games interpreter
Fast and lightweight JavaScript game engine built on WebGL and glTF
A modern, cross-platform Quake game engine based on FitzQuake.
Magic Another Game Engine
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Real Time Strategy game engine supporting early Westwood classics
The game engine for everyone
3D playground built on three.js and cannon.js
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Improved version of the X-Ray Engine, the game engine
A Flutter based game engine
Cross-Platform C++ 2D/3D game engine
Solar2D Game Engine main repository (ex Corona SDK)
Open source voxel game engine with support for survival and crafting
Powerful, mature open-source cross-platform game engine for Python
dhewm 3 main repository
DOOM / Heretic / Hexen source port with enhanced graphics and UI
A multi core friendly rigid body physics and collision detection lib