Explore stunning new circuits including Sonic Seaside Hill, Curien Mansion and Blizzard Castle as you zip around medieval castle ramparts, hurtle under lush rain forest canopies and tear through bustling city scapes in a frantic race to the finish line. Jostle against a selection of 20 challengers including Super Monkey Ball's Ai Ai, Amigo from Samba and the evil Dr. Eggman in your unique character vehicle. Stay ahead of the pack by dodging traps and launching outrageous character moves such as the invincible Super Sonic, Banana Blitz assault of monkey balls or Tails wild Tornado - set to throw any vehicle clean in the air! But if you've been battered, beaten and broken, it's not over yet! Super-charge your vehicle with power-ups to get back in the race and be sure to stay alert for the secret short-cuts that will give you the edge to victory.