GREED Tech MIT is a Open Source Engine for FPS Games
A game development kit for Sifteo Cubes.
A programmable platform for a fantasy RPG game.
A fun-filled new take on the casual first person arena shooter.
3D game engine for C and C++
Cross-platform port of Arx Fatalis, a first-person role-playing game
A graphics engine + toolkit.
Create your own animated characters for games with ease!
Game development toolkit
SuperWikia: The Runtime/Realtime Environment for Codesmiths
3D Web UI, Embed Web and Flash in 3D Games, based on WebKit
Nexuiz-Xonotic Client
An open source skateboard games engine written in C# and .NET.
Pear3DEngine is a modern and modular 3D development framework