GameBoy Advance Cheats: Yoshi Topsy-Turvy Cheats

Unlock Challenges 2. 3, and 4
To unlock these complete the Egg Gallery in story mode by eating all the Cherries.

Easier chance at getting a bonus minigame
If you collect a Gold Medal at the end of the level your chance of winning the bonus roulette will double.

Unlock the Final Challenge
To Unlock the Final Challenge Marble just get EVERY Gold Medal in Story Mode.

Unlock Challenge Mode
Defeat Bowser for the 2nd time in story mode to unlock challenge mode and challenge number 1