The following are known Code Breaker Codes for Jimmy Neutron: Boy Genius on Nintendo Game Boy Advance (GBA).

These codes are for the U.S. version of the game.

• Master Code – Must Be On
  923A5910 D588
  5CE754C2 91F9
  C6CDCA56 B873
• Quick Score Gain
  AF00ADC0 A6AB
• Max Score
  AF0085C0 2623
  BFC099E0 A21B
• Press Select To Get 99% Coin Rating
  AF034A65 4C13
  2C098250 BFE2
• Need 0 Special Items To Finish Level
  53E77847 51D9
• Infinite Lives
  6E25DC46 B5D1
• Invincible
  B51A0ABC 0F1F
• Infinite Health
  E5C6D4CA 1077
• Infinite Rocket Power
  350B0F54 1FDB
• Intinate Throw Sticks
  F51750AA 071F
• Have Rocket
  D4DFC233 C91B
• Rapid Fire
  5137700B 55DD
• Infinite Bombs
  472742CB 5DC4
  C527506B C51D
• No Overheating
  15E358E5 4199
• Quick Recovery
  77374622 0D88
  C1F77083 D151
  0AF1EA25 E8A0
  C1F77083 D151

Planet Yokus Codes

• Infinite Health
  F72EC6DA 1C6C
• Infinite Jetpack
  25EB2F7C 8B95
• Infinite Ammo
  65F7500A 13D5
• Rapid Fire
  43D7700B 51C6
• Quick Recovery
  ACD1CEAC A817
  5317700B D5CE
  E5D746AA 0917
  5317700B D5CE
• Press Select At Exit Point For All Items Found
  AF034A65 4C13
  D4F75887 D148
• Press Select At Exit Point For Collected 100%
  AF034A65 4C13
  C30F2AF7 4E13