GameBoy Advance :: Hamtaro - Ham-Ham Games Cheat Codes
Free play modeSuccessfully complete the game to unlock free play mode.
Hamigo Card File
Successfully complete the game to unlock the Hamigo Card File.
Silver Rainbow Cup
Successfully complete the game two times to unlock the Silver Rainbow Cup.
Alternate ending sequence
Collect all entries in the Hamigo Card File to view an alternate ending sequence.
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Talk to Bijooor whatever and she might give you a Hamigo card. Key word MIGHT if she does you will start your own collection of hamigo cards. go to the place you sleep and talk to everyone to get there card.