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 (1991 video game) and toys. "Sonic the Hedgehog" is one of the best-selling video game franchises of all time, with over 150 million copies sold by May 2014. The game's first stage, Green Hill Zone, has been used in several games, such as "Sonic Adventure 2", "Sonic Generations", "Sonic Mania", "Sonic Forces", and the "Super Smash Bros." series. The game's popularity inspired a number of unofficial variants, including "Somari", a pirated Nintendo Entertainment System conversion of the game featuring Nintendo's Mario character in levels from the original "Sonic" game, "Sonic the Hedgehog Megamix", a total conversion mod of the original game, and "Sonic