- Android Invasion
- LeapFrog Didj Custom Gaming System
Invader Zim has a sinister plot to overtake earth. In this action-packed side-scroller for Didj, you'll do battle as a SpongeBob, Danny Phantom or El Tigre. Harness their special powers and your math skills to defeat the forces of evil! And, you can customize the game online with the math skills you're studying in school.