Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Solar2D Game Engine main repository (ex Corona SDK)
Flax Engine, multi-platform 3D game engine
Cross-platform 2D and 3D game engine with modular architecture
The game engine for everyone
Cross-Platform C++ 2D/3D game engine
GemRB is a portable open-source implementation of the Infinity Engine
A JavaScript engine optimized for running React Native
Simple and light-weight 3D game engine
A game engine with an emphasis on real-time cutting-edge solutions
A certain block game
Multi Theft Auto is a game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A multi-platform support c++11 library with focus on asio
N64 Game-Engine and Editor using libdragon & tiny3d
Orx: Portable Game Engine
UCI chess engine
Play! - PlayStation2 Emulator
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Descent 3 by Outrage Entertainment
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Recreation of the classic Grand Theft Auto III game executable
Desktop/Android/HTML5/iOS Java game development framework