XE2 X-Engine

The X-Engine is a game engine built around Microsoft's XNA project. It is designed to make implementation of many common tasks easy, as well as expand upon this with some more advanced features. It is designed to make all of this easy with a very moddular system, where different components can be added and removed as required. The X-Engine built from the ground up in C# using XNA, and is compatible with both Windows and Xbox 360. The X-Engine is built on XNA Framework 2.0, and will be updated to XNA Framework 3.0 when the final version is released.

Go to http://xengine.codeplex.com/

See also these related projects.