Kirby Tilt 'n' Tumble (JP: "KoroKoro Kirby", or Roly-Poly Kirby) is a Game Boy Color game in which users utilized the cartridge's accelerometer features to tilt the GBC to move Kirby. The player can also jerk up the Game Boy Color to flip Kirby in the air, which gets him past enemies and over obstacles.
In Kirby Tilt 'n' Tumble, Kirby realizes that all the stars in Dreamland are missing and it is up to him to find them. Kirby Tilt 'n' Tumble was infamous on the Game Boy Advance SP, due to the location of the cartridge (i.e. actions are reversed).