Sonic CD Adding Tails
The Sonic CD port coming to multiple devices later this year has a special reward for you when you beat the game. You can play it again, but with Sonic's sidekick fox, Tails! First introduced in Sonic the Hedgehog 2, Tails was missing from the original.
Though SEGA still hasn't announced a release date for the game, they have revealed that you can get the game early with the purchase of certain GameStp tables, including the Samsung Galaxy, Acer 100, or ASUS Transformer.
Sonic CD will still revolve around stopping Dr. Eggman, but Sonic CD adds a time travel element, potentially make stages easier or harder depending on your actions. Sonic CD is due on PC, PSN, and Xbox Live Arcade, along with iOS and most mobile devices.