Unlockables
Extra Levels
Collect all of the red rings in a zone and you will unlock an extra level in that zone.
Super Sonic
Clear all of the special stages to collect the Chaos Emeralds and you'll gain access to Super Sonic.
Unlockable Modes
Beat the game and you'll unlock the Hard difficulty setting, as well as a music player.
Explore the galaxy in the franchise's first open-world game.
