List of Sonic the Hedgehog video games
"Sonic the Hedgehog" is a video game series. It is published by Sega, with entries developed by Sega, Sonic Team, Dimps, SIMS Co., Ltd., BioWare, and Sumo Digital. The series debuted in 1991 with the video game, "Sonic the Hedgehog", released for the Mega Drive video game console (named Genesis in North America). Most "Sonic the Hedgehog" games have either been platform games or released for Sega video game consoles and handheld game consoles (handhelds) dating from the Genesis to the eighth generation of video game consoles (2012–present). However, some of the original games were ported into versions on third-party home consoles and developed by several companies. As of February 2013, the series has collectively sold over 85 million copies worldwide across both the platform games and spin-offs.
Sega
For the North American market, where the console was renamed Genesis, former Atari executive and new Sega of America CEO Michael Katz developed a two-part approach to build sales. The first part involved a marketing campaign to challenge Nintendo head-on and emphasize the more arcade-like experience available on the Genesis,with slogans including "Genesis does what Nintendon't". Since Nintendo owned the console rights to most arcade games of the time, the second part involved creating a library of recognizable games which used the names and likenesses of celebrities and athletes. Nonetheless, Sega had difficulty overcoming Nintendo's ubiquity in homes. Tasked by Nakayama to sell one million units in the first year, Katz and Sega of America sold only 500,000.As Sega sought a flagship series to compete with Nintendo's Mario series, and a character to serve as a company mascot, artist Naoto Ohshima designed "a teal hedgehog with red shoes that he called Mr. Needlemouse". This character was renamed Sonic the Hedgehog, creating one of the best-selling video game franchises in history. The gameplay of "Sonic the Hedgehog" originated with a tech demo created by Yuji Naka, who had developed an algorithm that allowed a sprite to move smoothly on a curve by determining its position with a dot matrix. Naka's prototype was a platform game that involved a fast-moving character rolling in a ball through a long winding tube; this concept was fleshed out with Ohshima's character design and levels conceived by designer Hirokazu Yasuhara. Sonic's blue color was chosen to match Sega's cobalt blue logo. His shoes were inspired by Michael Jackson's boots, and his personality by Bill Clinton's "can-do" attitude.