A cross-platform PSP emulator
Desktop/Android/HTML5/iOS Java game development framework
Stream switch games to your PC via USB or network
Voxel game-creation platform with easy modding and game creation
UCI chess engine
A certain block game
The game engine for everyone
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Home theater software and entertainment hub for digital media
Solar2D Game Engine main repository (ex Corona SDK)
Multi-platform 2D and 3D game engine
Open-source engine for Heroes of Might and Magic III
Cocos simplifies game creation and distribution with Cocos Creator
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Code for Cicero, an AI agent that plays the game of Diplomacy
A promising chess program
Android, UIQ 3.0, Series 60 Edition 5 open-source software
3D Engine c++
... the open-source glide computer
GemRB is a portable open-source implementation of the Infinity Engine
computer opponent for the board game Blokus
3D modeler, 3D game maker, 3D demo maker
Old style soccer game with many exciting features
GLScene Engine for Delphi & C++Builder VCL Windows 32/64