This page contains Hamtaro: Ham-Hams Unite Unlockables for Gameboy Color called "G-Rock song" and has been posted or updated on Sep 11, 2006 by nellie. Let us know what you think of this Unlockable by thumbs voting.
Collect all of the rocks in each area and go to the Sky Garden area. Go to the hole and Chuck-Chuck all of the rocks in the box in order to open the rock door. Note: Inside the rock door is the HM Boutique.
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