A New Take on a Classic: This is like no other way you've ever played classic Sonic! Use the Chaos Emeralds' powers to multiply, swim up waterfalls, transform, and more. As Sonic, Tails, Knuckles, and Amy Rose, they used their special skills to investigate and discover new avenues and mysteries. More Fun, More Friends: Engage in local cooperative play with up to three other players, and use Battle Mode to take on players worldwide!