SEGA is celebrating Sonic’s 20th Anniversary with a brand new game that may be coming out in Fall of 2011. While we don’t know much about this game, the teaser trailer put out by SEGA on Facebook is a little strange. That’s because you’ll see two Sonics racing alongside each other. Does this mean we’ll be playing as the old one and the new one? This new game will supposedly be called “Sonic Generations”. There is also rumor that another new Sonic game that has remade levels of past Sonic games exists.

Are the new Sonic and old Sonic uniting for a new adventure?

We’ll keep you updated on how SEGA will be celebrating Sonic’s 20th anniversary this year. For now though, simply enjoy the teaser trailer put up on facebook.

Via: Joystiq