This page contains Yu-Gi-Oh! Duel Monsters Unlockables for GameBoy called "Super Lair card" and has been posted or updated on Sep 7, 2006 by dovettex. Let us know what you think of this Unlockable by thumbs voting.
Super Lair card
Select campaign mode at the title screen, then press Up, Down, B, Down(2), Up + B, B.
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