Cross-Platform C++ 2D/3D game engine
Open Source real-time strategy game engine for early Westwood games
Open-source engine for Heroes of Might and Magic III
Open source voxel game engine with support for survival and crafting
A cross-platform, open-source, pure C game engine for mobile game
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Blueshift is a cross-platform 3D game engine implemented in C++
Egret is a brand new open mobile game and application engine
Engo is an open-source 2D game engine written in Go
An easy to use 2D HTML5 game engine written in TypeScript
2D physics engine for games
The Tiny JavaScript Game Engine That Can!
Powerful, mature open-source cross-platform game engine for Python
Solar2D Game Engine main repository (ex Corona SDK)
Game engine supporting many 3D/2D formats and graphic effects
Opensource crossplatform Fallout 2 game engine writen in C++ and SDL
The game engine for everyone
A multi core friendly rigid body physics and collision detection lib
LayaAir is an open-source 2D/3D engine
A mobile game distributed server implemented using netty4.X
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A fresh & lightweight javascript game engine