Jimmy Neutron: Boy Genius Cheats (GameCube)

In first area in level 1, you do not have to win the space game. All you get is the
goldfish and rocket ship. To get the goldfish, Press square in front of Goddard then jump
on the platform.

Press R(2), L, A, B(2), A, R, L, R, Start, Down, A, Down during game play.