Awesome Iphone game steering!!!

Hello visitors, I just saw a video, while browsing. It was a game on Iphone. I was wondering where would be the controls since the game was taking the full screen and i just came to know that the game uses motion recognition system for the game controls, for eg, if you want to move left in the game, just turn the iphone left.

Here is one video showing the game which uses motion recognition system,