Unlockable - Unlockable characters | |
| Arnold | Complete 60% of the picture gallery |
| Tommy Pickles | Complete 40% of the picture gallery |
| Danny Fenton | Complete 20% of the picture gallery |
| Jimmy Neutron | Finish the game |
| Invader Zim | Finish the game |
Unlockable - New worlds | |
| Invader Zim's ship | Finish All Grown Up world |
| All Grown Up world | Finish Danny Phantom world |
| Danny Phantom world | Finish Ocean Shores world |
| Ocean Shores world | Finish Spongebob world |
| Spongebob world | Finish fairly odd parents world |
