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The adventure takes place on the secret Northstar Islands in this new full release of the classic high-speed 2D action platformer Sonic.

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

Navigate beautiful, never-before-seen environments alone or with up to 3 other players. Experience new classic sensations.

Stop Dr. Eggman, Fang, and a mysterious new opponent to prevent the transformation of giant animals into Badniks before it’s too late.

• A new approach to a classic: high-speed 2D platform action. You’ve never played Sonic Classic like this before!
• Play as your favorite characters: Choose from Sonic, Tails, Knuckles, and Amy Rose and utilize their unique abilities to cross the Northstar Islands.
• Hurry to defeat Dr. Eggman, who has teamed up with an old enemy, Fang.
• Harness the power of the Emeralds: multiply, swim through waterfalls, transform, and much more with the powers of the Emeralds.
• More friends, more fun: for the first time in a Sonic game, play the entire campaign with up to 3 other players locally cooperative, with 4 players able to join or drop out.