Desktop/Android/HTML5/iOS Java game development framework
An iOS & tvOS Frontend for Multiple Emulators
One framework for creating powerful cross-platform games
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
GemRB is a portable open-source implementation of the Infinity Engine
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
3D modeler, 3D game maker, 3D demo maker
Cinema Enters Game Console
ZED OS the clone of Windows XP
Cross-platform 2D and 3D game engine
Character animation system for games and simulations.
3D .NET engine for Windows, Linux, Mac
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Egret is a brand new open mobile game and application engine
A cross-platform OpenGL based lightweight scenegraph library
The source code for the UDK release of apoclyofable
The Objective-C Interactive Simulation Abstraction Layer