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The adventure takes place across the mystical Northstar Islands in this all-new version of the classic high-speed Sonic 2D action platformer.

Play as Sonic, Tails, Knuckles and Amy Rose and use new Emerald powers to move and attack in dynamic new ways.

Navigate gorgeous, never-before-seen environments alone or with up to 3 other players. You will experience new classic sensations.

Stop Dr. Eggman, Fang, and a mysterious new adversary from turning the islands' giant animals into Badniks before it's too late.



Characteristics:
- A new spin on a classic: high-speed 2D side-scrolling action platformer. You've never played classic Sonic like this!
- Play as your favorite characters: choose from Sonic, Tails, Knuckles and Amy Rose and take advantage of their unique abilities to make your way through the Northstar Islands.
- They rush to defeat Dr. Eggman, who has teamed up with an old enemy, Fang.
- Harnessing the power of Chaos Emeralds: Multiply, swim in waterfalls, shapeshift and more with the powers of Chaos Emeralds.
- More Friends, More Fun: For the first time in a Sonic game, play the entire campaign with up to 3 other players with 4-player local co-op that can be picked up and dropped.