An open source skateboard games engine written in C# and .NET.
3D Web UI, Embed Web and Flash in 3D Games, based on WebKit
Pear3DEngine is a modern and modular 3D development framework
An extensible development framework for roleplay games.
Phobos editor is a generic resource editing system.
Open Source Virtual World and MMOG Development Platform
C++ Game programming Framework
I am working on upgrading the XNA Platform Game Template.
Investigo - DX9 Performance and Debugging Toolkit
A cross-platform OpenGL based lightweight scenegraph library
Simple Point & Click Game
Create your own online real-time browser-based MMO in your website
This game is a 2d arcade game. You can move, jump, kill monster.
A DirectX based graphics/physics engine
DREAM is an Open Source GCS
The Lambda-Engine is a cross platform game engine.