Monkey Madness - Monkey Madness is a Rampage clone for mobile devices. The objective is to avoid getting hit, and to destroy as much stuff as possible. I thought this would be great for a mobile game (i.e. a quick game that you can play on the bus for a bit and put down again).
Because this game was developed using J2ME, it should work on most mobile devices. A lot of work went into making the game more streamlined, with a smaller footprint, as there is very little memory available.