Sonic the Hedgehog different media including animation, comic books, and a Hollywood film. The first "Sonic" game, "Sonic the Hedgehog", is a platform game released in 1991. Players control the anthropomorphic blue hedgehog Sonic, who can run and jump at high speeds using springs, ramps, and loops. Sonic must stop Dr. Robotnik from taking over the world using the Chaos Emeralds. "Sonic the Hedgehog 2" (1992) increased the overall size and speed of the series' gameplay and was the second best-selling Genesis game. It introduced Sonic's sidekick and best friend, Miles "Tails" Prower, who followed Sonic throughout the game, and allowed a second
Sonic the Hedgehog 2 Sonic the Hedgehog 2 Development of the game began in November 1991. The game was developed by both Japanese and American staff at Sega Technical Institute; art director Tim Skelly designed the appearance of the game's new 3D special stages, which were based on an earlier tech demo created by Yuji Naka. The staff increased the speed of "Sonic the Hedgehog 2" in comparison to its predecessor. As with the first installment, the soundtrack was composed by Masato Nakamura. "Sonic the Hedgehog 2" sold over six million copies, making it the second-best-selling Genesis game behind the original "Sonic the Hedgehog".