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 4: Episode I Sonic the Hedgehog 4: Episode I "Episode I" was released in October 2010 for iOS, PlayStation Network, WiiWare and Xbox Live Arcade. A release for Windows Phone 7 followed in June 2011, for PC (via Steam) and Android in January 2012, for BlackBerry PlayBook in July 2012, and for Ouya in July 2013. A direct follow-up, "", was released in 2012. "Sonic the Hedgehog 4: Episode I" is a 2D side-scrolling platformer reminiscent of the original "Sonic" games for the Sega Mega Drive/Genesis. Players control Sonic the Hedgehog, using mechanics such as the original Spin Dash and power-ups such as