Game Description:The wild blue yonder just got wilder (and bluer)! Everybody's favorite blue hedgehog goes aerial to solve a mystery in the latest Sonic adventure. Sonic finds a valuable emerald, only to have it snatched away by three thieves riding air boards. Later, Dr. Eggman announces a new air board race: the EX World Grand Prix. When Sonic sees the thieves are the top contenders, he's in! But who are the mysterious riders? And what's Dr. Eggman after? The mystery unfolds at breakneck speed! To solve it, you'll rocket through outrageous tracks in a race that blends surfing, snowboarding, and high-speed racing combat into one unmatched adrenaline rush!