Yoshi: Topsy Turvy Game Boy Advance

This innovative action game uses a motion sensor, built in to the cartridge, that allows players to tilt the entire game world by tilting the GBA handheld itself. By turning the GBA on its side, players can rotate all of Yoshi Island, causing objects to tumble, pendulums to swing, and bad guys to fall over. An onscreen meter displays the current orientation of the handheld (and game world), helping players to keep their bearings throughout the topsycarefully turvy gameplay. As in many of the classic games starring Mario and his friends, this platform adventure allows players to collect coins and race to ends of the levels for high scores, or explore the nooks and crannies of each area to discover hidden bonuses and useful secrets. ~ T.J. Deci, All Game Guide