A cross-platform PSP emulator
Voxel game-creation platform with easy modding and game creation
Desktop/Android/HTML5/iOS Java game development framework
A certain block game
UCI chess engine
Stream switch games to your PC via USB or network
The game engine for everyone
Home theater software and entertainment hub for digital media
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Solar2D Game Engine main repository (ex Corona SDK)
Cocos simplifies game creation and distribution with Cocos Creator
Open-source engine for Heroes of Might and Magic III
Multi-platform 2D and 3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Android, UIQ 3.0, Series 60 Edition 5 open-source software
... the open-source glide computer
3D modeler, 3D game maker, 3D demo maker
3D Engine c++
GemRB is a portable open-source implementation of the Infinity Engine
Orx: Data-Driven Game Engine
A promising chess program
A catalog of free games relative to the Qore World universe.
GameServer is a sophisticated, game server designed for online games
computer opponent for the board game Blokus