This page contains Cheats for Cosmo Tank organized by sections for GameBoy. This game has "Action Shooter" as genre, made by Asuka Technologies. If you can't find a hint or secret in our list, then please check this page periodically for the latest updates.
- Developer: Asuka Technologies
- Publisher: Atlus
- Genre: Action Shooter
- Release: Not Set
- ESRB: Not Set
On the subscreen at the beginning of the Quest Mode, simultaneously press and hold Down, A and B. While holding these, press Start. If this is done correctly, the message "Sound Test 01" will appear...From: Monique
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