The evil doctor Robotnik wants to conquer the world. In order to dothat he imprisons and transforms all animals into robots. This waythey can build his powerful weapon - the Death Egg.Along with your sidekick Tail you must collect all the Chaos Emeralds - free the animals and defeat Robotnik. Thegame features 10 big zones in which you must defeat enemies and gatherrings. It also features a 2 player mode in which you can race with afriend.