Sonic the Hedgehog is a console role-playing game, developed and published by Sega for the Genesis console. The game was released in Japan on July 17, 1991 and in Korea on October 12, 1991. It is the second game in the Sonic the Hedgehog series, after Sonic Adventure 2. The game is a side-scrolling action game, set in a 2D side-scrolling world. The game is played from the perspective of Sonic the Hedgehog, who is voiced by Yuji Sakamoto. Sonic the Hedgehog is a fast, agile, and powerful character, and also has a number of unique abilities. The game features a variety of levels, including stages based on various Sonic games, such as Sonic Adventure 2 and Sonic X. The game received mixed reviews from critics. However, it remains one of the best-selling console games of all time.