Adventures of Jimmy Neutron Boy Genius: Attack of the Twonkies, The
Adventures of Jimmy Neutron Boy Genius: Attack of the Twonkies, The Cheats...
Extra challenges...
Extra level...
Inventions...
Jump Higher...
Extra challenges
Finish retroland level.
Extra level
Finish the game.
Inventions
To tell if you can make a invention, there will be a box on the top right of the screen.
Jump Higher
Run around in circles and jump. You will jump higher and in a circle.
More Cheats, Achievements...
All The Cheats for GameCube...
All The Cheats for All Systems...
Extra challenges... Extra level... Inventions... Jump Higher...