Mission mode:
To unlock the ability to play any stage in Mission mode, beat the Babylon or Hero story and then play that storyline again.
World Grand Prix mode:
To unlock World Grand Prix mode, beat the Hero story.
Bonus tracks:
To unlock the 80’s Boulevard and 90’s Boulevard tracks, beat the Babylon story.
Bonus characters:
Unlock the following characters by performing the corresponding tasks:
CHARACTER – HOW TO UNLOCK
Amigo – Beat all missions in Story mode.
Billy – Beat all missions in Story mode.
Blaze – Beat the Babylon story.
Cream The Rabbit – Beat the Hero story.
Eggman – Beat the Babylon story.
NiGHTS – Beat all missions in Story mode.
Rouge The Bat – Beat the Hero story.
SCR-GP – Beat the Babylon story.
SCR-HD – Defeat SCR-HD in a Free Race.
Shadow The Hedgehog – Beat the Hero story.
Silver – Beat the Babylon story.
Bonus gear:
Unlock the following gear by performing the corresponding tasks:
GEAR – HOW TO UNLOCK
Angel/Devil gear – Beat the Hero story.
Chaos Emerald gear – Earn an “Extreme” rank on all missions in Story mode.
MAG gear – Beat all missions in Story mode.
Movies:
Unlock the following movies by beating the corresponding story:
MOVIE – HOW TO UNLOCK
Ending – Beat the Babylon story.
Insert – Beat the Babylon story.
Opening – Start the Heroes story.
Easy Rings:
To easily gain rings, select Mission 2 “Collect ‘X’ Rings” in Mission mode on any of the tracks. There is no limit to the amount of rings that can be collected in this mission. Continue to replay this mission until you get your desired amount of rings.
Another way to easily earn rings is to purchase the Gambler gear at the shop and take it on a World Grand Prix; you can earn 500 rings per race. If you place 1st in the Grand Prix, you will earn 3,500 rings.