Game Description:Still spinning strong, Sonic the Hedgehog returns to Game Boy Advance to defeat his arch enemy, the evil Dr. Eggman. Exclusive to the Game Boy Advance, Sonic Advance 2 takes you on a quest for Chaos Emeralds. Joined by your new pal Cream the Rabbit, you will fight Dr. Eggman's machines, speed through deadly obstacles and impossibly wacky levels! Collect enough Chaos Emeralds and you'll transform into Super Sonic for the final battle. Once Sonic gets going, nothing can stop him!