Event driven concurrent framework for Python
Create symmetric sprites: browse, save to PC, or store online
Java decentralized cross-platform network multiplayer game engine
A generic 2D engine for any kind of game
Java Gamepad API for multiple platforms
A 3D, fully concurrent game engine
A multiplatform game engine for interactive fiction experiences
An open source skateboard games engine written in C# and .NET.
Pear3DEngine is a modern and modular 3D development framework
Game framework on top of Python, Panda3D and Twisted