Sonic Riders: Zero Gravity - Unlockables

Characters:
Complete the following storylines to obtain the following characters.
Amigo: Complete all missions in Story mode.
Billy: Complete all missions in Story mode.
Blaze: Complete Babylon Story.
Cream The Rabbit: Complete Hero Story.
Eggman: Complete Babylon Story.
NiGHTS: Complete all missions in Story mode.
Rouge The Bat: Complete Hero Story.
SCR-GP: Complete Babylon Story.
SCR-HD: Defeat SCR-HD during a Free Race.
Shadow The Hedgehog: Complete Hero Story.
Silver: Complete Babylon Story.

Gear:
Complete the indicated task to unlock the corresponding gear.

Angel/Devil gear: Complete Hero Story.
Chaos Emerald gear: Earn an "Extreme" rank on all missions in Story mode.
MAG gear: Complete all missions in Story mode.

Movies:
Complete the indicated task to unlock the corresponding movie.
Ending: Complete Babylon Story.
Insert: Complete Babylon Story.
Opening: Start Hero Story.

Tracks:
Complete the indicated task to unlock the corresponding track.
80s Boulevard: Complete Babylon Story.
90s Boulevard: Complete Babylon Story.

Mission mode:
Successfully complete Babylon Story or Hero Story. When that storyline is played again, you can choose any stage and play in Mission mode.

World Grand Prix mode:
Successfully complete Hero Story.

Easy rings:
Enter Mission mode and select Mission 2, "Collect 'X' Rings" on any of the tracks. During this mission you are not limited to a set number of rings that you can collect. Collect as many rings as possible before reaching the goal, then wait for the results screen to appear. Once the results finish displaying, all the rings you have collected will be automatically sent to your ring account although the game will not show you this. Pause game play and select "Restart" to begin the mission again. Keep repeating the process. If you can get at least 250 rings per try, you should have collected enough rings to purchase even the Rainbow gear within an hour or two.

The Gambler gear at the shop has an interesting secret. If you have bought it and take it on a World Grand Prix, you can earn 500 rings per race. If you finish in first place in the Grand Prix on top of that, you will get a total of 3,500 rings. Just three Grand Prixes will give you enough rings to buy the rainbow in exactly one hour. Note: You must know your courses well though, because the Gambler cannot take type shortcuts.