"Super fast, super fun, superstars! Journey to the mystical Northstar Islands in this all-new take on classic 2D Sonic high-speed action platforming! Play as Sonic, Tails, Knuckles, and Amy, and harness all-new Emerald Powers to stop Dr. Eggman, Fang, and mysterious new adversary Trip from converting the island's giant animals into Badniks before it's too late! Choose your favorite character, play with or against your friends, master new powers & abilities"--Container.