Kirby's round physique once again provides a roly-poly experience! While Tilt 'n Tumble was Kirby's sole outing on the Game Boy Color, it's unique in that the entire game is controlled by physically tilting around the system itself, thanks to an accelerometer built into the game cartridge. Aside from making Kirby tumble through secret areas in the main story mode, five other motion-based mini-games are included too.