Games that work by tilting your phone and require no buttons to be pressed are highly addictive, for example Resco Bubbles, a game that requires you to move your phone around to control a ball on the screen. To play these type of games, your phone must have a G sensor built-in, listed below are some of the popular phones with Accelerometer: HTC Touch HD Samsung i900 Omnia HTC Touch Diamond HTC Touch Pro HTC Touch Diamond 2 HTC Touch Pro 2 Samsung Omnia II (I8000) Must have apps ;) HTC Light Saber ......