Battle Mode: players select from six ways to thrash their rival buddies: Knockout, Ring Battle, Race, King of the Hill, Capture the Chao, and Tag.
Single Disc Game Sharing: two players can easily access the Multiplayer challenge with just a single disc using the wireless function.
Intriguing New Storyline: the Chao seem to be disappearing and all eight rivals must work fast to find out who is behind it.
Three New Playable Characters: Miles "Tails" Prower and two other new characters round out the cast of eight rivals.
Free Play Mode: free from rivalry, the player can experience the challenging old-school Sonic-style map at their own pace!
Expanded Card Collection: players can now collect 150 new cards for loads of new options to customize their playable characters.