Having been broken apart by the evil Dr Eggman, it's down to Sonic to put the pieces of the world back together again by retrieving the power of the chaos emeralds. In doing so, Sonic will find himself in a race against time and faced with an unusual situation that will challenge him in ways never before seen. By completing a wide variety of action-packed stages, spanning the seven broken continents of the world, gamers will need to unleash Sonic's amazing abilities to save the world, and himself!