Sonic the Hedgehog Sonic the Hedgehog Sonic the Hedgehog is a video game franchise produced by Sega centering on a series of high-speed platform games. Sonic, the protagonist, is an anthropomorphic blue hedgehog with supersonic speed. Typically, Sonic must stop antagonist Doctor Eggman's plans for world domination, often helped by his friends, such as Tails, Amy, and Knuckles. The first "Sonic the Hedgehog" game, released in 1991, was conceived by Sega's Sonic Team division after Sega requested a mascot character to compete with Nintendo's mascot Mario. Its success spawned many sequels and helped Sega become one of the leading video game companies during
Sonic the Hedgehog of the Mario and Sonic crossover games. The first, "Mario & Sonic at the Olympic Games", was released in late 2007, and featured characters from both series competing in Olympic-themed mini-games. Its sequel, "Mario & Sonic at the Olympic Winter Games", was released in October 2009, and featured an emphasis on winter-based sports. "", a spin-off released in September 2008, was a turn-based role playing game developed by BioWare. During this timeframe, Sega took the franchise in a number of different directions. First was "Sonic the Hedgehog", which was released in November 2006 for the Xbox 360 and December 2006