Story : A Sorceress named Merlina summons Sonic to help free the mystical Realm of King Arthur who has been possessed by an unknown evil that comes from Excalibur's scabbard, and is now ruling the realm as the tyrannical Black Knight. Sonic's speed alone will not end the Black Knight's reign. so he must take up the sword in order to break Arthur's curse and save the Kingdom. Sonic must also collect the blades of King Arthur's Knights of the Round Table and Excalibur itself if he is to restore King Arthur's sanity and return him to a benevolent ruler.
Multiplayer : up to 4 players can playing choosing from one of the 12 characters to partake in different kinds of battles. Characters Include : Sonic, Amy, Tails, Silver, Blaze, Knuckles, Shadow, Jet, and More...