Two players can take on the entire campaign locally or online, selecting who will play as Sonic and Tails at the outset. Three different combo moves can be used at any time, allowing both players to work together to overcome obstacles. Players share rings and lives.
The Sonic 4 Saga continues in Episode II with the return of a beloved sidekick and fan-favorite villains! Following the events of Episode I, Metal Sonic has returned to form an alliance with Dr. Eggman! To face this new evil, Sonic will have to call upon an old friend Tails to help him save the day.