Guides
GameBoy : Cosmo Tank Cheats
Below are the cheats, hints, and tips that Game Gas knows about for Cosmo Tank. On the right are
websites that may have additional cheat codes, hints, or tips for Cosmo Tank.
Sound Test
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.