Trivia: The background music of the Nocturne is a remixed version of the final boss music themes for 'Sonic and Knuckles' and 'Sonic 3'.
Trivia: Near the end of the game, as the everyone is escaping into their ship, no one is seen carrying the Master Emerald.
Trivia: This is the first Sonic game since Sonic R to have one of the emeralds appear in a different color like orange and pink.