Here is my latest demonstration of immersive gaming projection using an iPhone 3GS (with magnetometer compass) and ShowWX laser pico projector (infinite focus). This time, I built a rig so I could actually play the game and record at the same time. Engadget just broke the news here...
http://www.engadget.com/2010/05/17/diyer-combines-iphone-3gs-with-show-wx-for-pico-projected-gaming/
http://www.engadget.com/2010/05/17/diyer-combines-iphone-3gs-with-show-wx-for-pico-projected-gaming/