This page contains Pocket Monsters: HeartGold Easter Eggs for Nintendo DS called "Game Boy reference" and has been posted or updated on Apr 29, 2010 by Lemtard. Let us know what you think of this Easter Egg by thumbs voting.
Game Boy reference
At Celadon City, enter the Celadon Condominiums next to the Pokemon Center. Use the elevator to reach the third floor. When you exit, your friend will tell you about the GB Sounds. Talk to the man next to the globe after collecting all of the Kanto badges to get the GB Sounds Device.
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