The Adventures of Jimmy Neutron vs. Jimmy Negatron Cheats For Game Boy Advance

1. Unlocking More Levels

   At the Main Menu when the ''Blue Neutron'' appear's on Jimmy's super computer, press down until Jimmy says ''Can I continue a game?'' Press A and you'll be taken to a code screen. All letters marked as (B), are circled letters.
   
   Powerstation, My Computer, and Caves levels
   NBODLH(D)L
   
   Quantum Dimension, Jelly Dimmension, and Rocket Launch Site
   D(B)(Y)B4V(H)V

   Contributed by: SonicFan4786 

2. Retroland and Jimmy Negatron

   In a rush to go to Retroland, so you can go beat up your evil double! Then at the Main Menu when the ''Blue Neutron'' appear's on Jimmy's super computer, press down until Jimmy says ''Can I continue a game?'' Press A and you'll be taken to a code screen. All letters marked as (B), are circled letters.
   
   Retroland and Jimmy Negatron (with full life and ammo)
   DBD7M(V)GZ
   
   This code will let you go through Retroland and fight Jimmy Negatron with 3 Jimmy Neutrons remaining, a full bar of life, and a full bar of ammo.

   Contributed by: SonicFan4786 

3. Level Select

   Enter the following codes to enter the levels.

   Effect	Effect
   JJB?X6XC9!QW	Level 2
   5Q76J0KHX14K	Level 3
   ?DTGYSPQR$Y0	Level 4
   VOKC98TYL-JN	Level 5
   SDBH7F9MJ5+J	Level 6
   C!1MBNIL4?CC	Level 7
   8XY271+z?8B3	Level 8

   Contributed by: tiamold