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