The Death Egg, Dr. Ivo Robotnik's space station, has once again crashed on Angel Island after the events of Sonic the Hedgehog 3. Robotnik needs power the Chaos Emeralds to power it up again, and because of this, Sonic and Tails have to find the Chaos Emeralds before him so they can stop his plans of world domination. However, Knuckles, the guardian of Angel Island and the Master Emerald, was tricked by Robotnik into thinking that Sonic and Tails are after the Master Emerald, so he is equally determined to stop the duo. But while all 3 are going round with each other, who's gonna stop Robotnik? Written by
Did You Know?
, who composed the music for the first two games, Sonic the Hedgehog
(1991) and Sonic the Hedgehog 2
(1992) was invited to return to compose but Nakamura demanded a higher salary as well as greater compensation fees for any music that would be reused in future titles. Not wanting to pay what he was requesting, Sega decided to turn elsewhere for the music. See more
In Sandopolis Act 1, after the boss is defeated, for some reason, the boss music continues to play. See more
Follows Sonic the Hedgehog 2