The following are known Code Breaker Codes for Ice Age on Nintendo Game Boy Advance (GBA).

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

• Master Code – Must Be On
  90196CA8 F7B2
  87473516 9E49
  6AF7B6F3 4000
• Invincible
  1A9C879D 09AC
• Infinite Hazelnuts
  38881FC9 8458
• Have All Golden Hazelnuts
  28D1A6AD EDDC
• Unlock All Levels
  3355BA51 FD8B
• Have Rock
  A73F57B3 1000
• Have Walnut
  852A4FAF 302A

1-Hit Death Bosses Codes

• Level 1
  FEA6DB9B 941C
  FCAA5BCB A47C
• Level 2
  3A87891E 323F
  FCAB4F6F 001B
• Level 4
  CEA6CA7F C44F
  CCAA4A2F F42F
• Level 7
  03178416 7223
  C53B4267 4007
• Level 10
  DEEEFA9B D41C
  DCE27ACB E47C
  115A2046 EE37
  CCF26627 F423
• Bonus Level
  BEA7DDDA 0218
  FCAB5B8B 307C