• By tilting the Game Boy Advance SP, players will turn the environment around Yoshi to knock over enemies, swing pendulums, and help Yoshi run up walls and leap huge pits.

• All of Yoshi’s Island is trapped in a storybook, and only by meeting the challenges of each chapter will players succeed. Collect coins, defeat enemies or race for the finish to satisfy each course’s conditions.

Story
When Bowser starts wreaking havoc on Yoshi’s Island, a book spirit named Hongo traps the entire island within the pages of a storybook. Only by locking Bowser away can Yoshi convince Hongo to release the rest of the island, so he sets out to progress through the chapters of the book...

Each course is controlled by a spirit. One loves money, one who loves fast things, one who loves friendliness, one loves strength, etc. They will set out guidelines for the course, such as collecting fruit to free a certain number of Egglings, finshing a course before time runs out, finding a certain number of coins or destroying -- or, in a particularly clever twist, not destroying -- a certain number of enemies. By satisfying that spirit’s requirements, players pass the course.

Yoshim, being 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. Each environment requires players to master not only button presses but also tilt movements to progress.