| Unlockable | How to Unlock |
| Cream The Rabbit | Complete Hero Story |
| Dr. Eggman | Complete Babylon Story |
| Rouge The Bat | Complete Hero Story |
| Shadow The Hedgehog | Complete Hero Story |
| E-10000G | Play for 20 hours. |
| E-10000R | Play the game for at least 50 hours |
| Super Sonic | Complete all Missions in Mission Mode with a Gold Emblem |
Unlocking Boards/Scooters/Sneakers
| Unlockable | How to Unlock |
| Bike type (Different Styles of Boards/Scooters) | Beat Babylon Story |
| Blue Star II (Sonic's Board) | Beat Babylon Story |
| Darkness (Shadow's Sneakers) | Beat Hero Story |
| Egg-Rider (Eggman's Scooter) | Beat Babylon Story |
| Magic Carpet | Beat Babylon Story |
| Skate type (Shadow's Sneakers) | Beat Hero Story |
| Unlockable | How to Unlock |
| AiAi | Beat all Jet, Wave and Storm missions |
| Nights | Beat all Jet, Wave and Storm missions |
| Ulala | Beat all Jet, Wave and Storm missions |
| Unlockable | How to Unlock |
| SEGA Carnival | Beat Heroes Cup w/ Gold Emblem |
| SEGA Illusion | Beat Babylon Cup w/ Gold Emblem |
To unlock game tracks in the Audio Room under the Extras menu, perform the following tasks:
| Unlockable | How to Unlock |
| "Catch Me If You Can" | Complete Babylon Story in Story Mode |
| "Theme of SEGA Carnival" | Unlock the SEGA Carnival Track in World Grand Prix |
| "Theme of Digital Dimension" | Complete Babylon Story in Story Mode |
| "Theme of Babylon Garden" | Complete Heroes Story in Story Mode |
To unlock new, exclusive gear in the shop, perform the following tasks:
| Unlockable | How to Unlock |
| "Super Hang-On" Gear | Complete all of Jet, Wave and Storm's Missions |
| "Hang-On" Gear | Complete all of Jet, Wave and Storm's Missions |
| "The Crazy" Gear | Complete all of Jet, Wave and Storm's Missions |
| "Opa Opa" Gear | Complete all of Jet, Wave and Storm's Missions |
