This Battlefield 3 simulator with live paintball pellets shooting at you is no joke! I totally want to try it.

Centred on the world’s first, portable omni-directional treadmill (designed by Swedish company MSE Weibull) the simulator lets you control the movements of a Battlefield 3 character with your own body. Other key technology employed includes: an Igloo Vision projection dome; 12 paintball markers that allow the player, in real time, to feel the enemy gunfire experienced in the game; a wireless gun system; ambient LED lighting; and an Xbox Kinect camera hack.