Sonic the Hedgehog 2, or simply Sonic 2, is a platform game developed by American studio Sega Technical Institute in collaboration with Sonic Team, and published by Sega for the Mega Drive/Genesis. It was released in Japan on November 21 1992 and in North America and Europe three days later on November 24 1992. It is the sequel to Sonic the Hedgehog and was followed by Sonic the Hedgehog 3 in 1994. The game introduces Miles "Tails" Prower as a new playable character.