Sonic the Hedgehog 3

is a platform video game developed by Sonic Team and published by Sega. The third main game in the Sonic the Hedgehog series, it was released for the Sega Genesis worldwide in February 1994, and in Japan three months later. Following the events of Sonic the Hedgehog 2, Dr. Robotnik's spaceship, the Death Egg, crash-lands on a mysterious floating island. There, Sonic and Tails must once more retrieve the Chaos Emeralds to stop Death Egg from relaunching, while making rounds with the island's guardian, Knuckles the Echidna.