The following can be unlocked by defeating the Babylon Story: 80's Boulevard (track), 90's Boulevard (track), Blaze (character), Eggman (character), SCR-GP (character), and Silver (character).
To acquire Chaos Emerald Gear, you must attain the highest rank on each Story Mode mission.
To acquire the MAG Gear, you must clear each mission on Story Mode.
To unlock a piece of gear called the Magic Broom, beat the Hero Story once through in its entirety.
Mission Mode is unlocked in the game once you've beaten Story Mode at least once.
By completing all of the missions in Mission Mode, you can unlock the following three characters: Amigo, Billy Hatcher, and Nights.
To unlock new movies, try the following. Two new movies can be unlocked by completing the Babylon Story in its entirety, while a third movie can be unlocked by completing the Heroes Story in its entirety.
The following can be unlocked by defeating Team Sonic's Story: Cream the Rabbit (character), Rouge the Bat (character), Shadow the Hedgehog (character), World Grand Prix (mode).