A simple and easy-to-use library to enjoy videogames programming
One framework for creating powerful cross-platform games
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
Open source library for creative expression on the web, desktop, etc.
Cinema Enters Game Console
2D Game Engine
Reactive extensions for Unity
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
A cross-platform OpenGL based lightweight scenegraph library
Cross-platform 2D game engine