Solar2D Game Engine main repository (ex Corona SDK)
The flexible game engine
Open Source real-time strategy game engine for early Westwood games
Fast and lightweight JavaScript game engine built on WebGL and glTF
Godot is a powerful cross-platform game engine
Injectable LUA scripting system, SDK generator, live property editor
Cross-Platform C++ 2D/3D game engine
Multi Theft Auto is a game engine
Open source voxel game engine with support for survival and crafting
The game engine for everyone
Real Time Strategy game engine supporting early Westwood classics
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Open source clone of the Age of Empires II engine
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
3D Procedural Game Engine Using OpenGL
Powerful, mature open-source cross-platform game engine for Python
Open-source engine for Heroes of Might and Magic III
Magic Another Game Engine
3D game engine/framework in C, with Luajit and Python bindings now
A multi core friendly rigid body physics and collision detection lib
LayaAir is an open-source 2D/3D engine
Animation Compression Library
3D Game engine with editor
Ct.js is a desktop game engine that makes learning programming fun
A pure Go game engine