codeplex.com — RaycasterX is an MIT-licensed project geared towards the creation of a full raycasting engine for XNA. Currently RaycasterX is built against the XNA Game Studio 3.0 CTP providing support on both Windows and Zune. Xbox 360 support will be added when a version of XNA Game Studio 3.0 is released that supports Xbox 360 building and deployment. read more...