You start with three characters...Sonic, Knuckles and Tails. You must first complete an adventure, then do break the targets, and finally you battle to complete Adventure mode with each character.
As you complete adventure mode with each of those characters, you unlock other characters... Amy, Rouge, Shadow and Cream. You can also unlock more characters through various challenges as you advance through the game. This game is a must play for all Sonic fans and Super Smash Bros. Brawl fans!
Play the Game: Sonic Smash Brothers
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