Sonic the Hedgehog 2 is a video game developed by Sega Technical Institute by the end of 1992 for computer entertainment system featuring Sega Mega Drive Sonic the Hedgehog and a new ally presented first, Tails. It is the continuation of Sonic the Hedgehog video game released on the same platform. The game first introduced to Miles Prower Tails as a playable character. The game was re-released for the Wii and the Xbox Live Arcade.