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 3 in the game's advertisements and was also released as a single, which charted in the UK at number 55. Sega planned to release a single cartridge version of "Sonic 3" and "Sonic & Knuckles", "Sonic the Hedgehog 3 Limited Edition", but it was cancelled for unknown reasons. A prototype ROM image of this version was leaked in 2008. The game is included in the compilations "Sonic Jam" (1997) for the Sega Saturn, "Sonic & Knuckles Collection" (1997) and "Sonic & Garfield Pack" (1999) for Microsoft Windows, "Sonic Mega Collection" (2002) for the GameCube, "Sonic Mega Collection Plus" (2004) for the