Astonishing Island has taken over the island and the Maboo Tribe needs your help. To restore order, create your own creature, train it up and enter it into competitions against Astonishing Island 's forces to defeat them. As you win, unlock new features to improve your creature's speed, strength and appearance.
The gameplay is all about using your controller skills, mostly pressing buttons fast. The chances of success depend on the monster's stats. For example, a flying creature like a dragon would be better for flying mini-games. You can enhance these stats with items bought at shops.
Play single-player or multiplayer battles on the GameCube, or take your creatures to the Game Boy Advance and challenge friends, unlocking new features and items for your creations.