The Sonic the Hedgehog series is a video game franchise created by Sega. The series centers on a blue anthropomorphic hedgehog named Sonic, whose peaceful life is often interrupted by the evil scientist Dr. Ivo “Eggman” Robotnik. Sonic must stop Eggman from taking over the world.

The first Sonic game was released in 1991, and the series has since been released on multiple platforms. As of June 2011, the series has sold over 80 million units.

The Sonic CD Sega CD game is a platform game that was released for the Sega CD. The game was released in 1993.

The …