The following are known Code Breaker Codes for Shrek: Hassle at the Castle on Nintendo Game Boy Advance (GBA).

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

• Master Code – Must Be On
  94B26026 4C02
  D38A7AC6 5FE2
  277012DD 4291
• Infinite Health
  6BB5DCC9 3B55
• Invincible
  A47AAB4E 4FEA
  1E4662D6 66A6
  52E4E1C8 5F2B
• Infinite Lives
  EACA22D6 66A6
  E29C29D4 56EB
• Infinite Shout
  A65C09D0 566B
• Stop Timer
  52E5E4CD 1B93
• Multi Jump
  5BD530D0 2F15
  A63CED0D 5530
  5BD530D0 2F15
  61901DB0 D8B2

Escaping The Dragon Codes

• Infinite Health
  2E4060D2 7626
  62B4C9CE 5FEA