Yoshi can jump and stick out his tongue to eat fruit or enemies, but the main feature of the game is the tilt mechanism. By moving the Game Boy Advance SP side to side, players tilt the world around Yoshi, causing enemies to roll around, swinging ships and pendulums and bouncing items all over the place. An impassable wall will become a climbable slope, or a rolled-up carpet will become a long platform – all of the environments require players to master not only button presses but also tilt movements to progress.