If you enjoy playing Fruit Ninja on your iPhone or iPad, then you should check out what some enterprising germans have built inside a 4-walled cave at FH-Wedel.
VR-Project at FH-Wedel Germany in a 4 sided CAVE
Virtual Reality based on 3D cognition, placed sounds over a 5.1 sound system, buttkickers in the floor and haptic feedback through a Wii-Mote.
Tracking over a infrared cameratracking system.
Physics Library: bulletphysics.org