From the Super Mario Wiki, the Mario encyclopedia
The Mushroom Beacon is a location in Mario Party Advance, located in the Seaside Area of Shroom City. It is a grey lighthouse situated on the area's coastline. Blooper trains at the lighthouse to become a duelist. If the player visits the beacon, Blooper challenges them to a duel, and accepting starts his quest, Blooper Battle. During the quest, Blooper makes them player a duel minigame, Hammergeddon. If the player wins, they keep the minigame, with Blooper promising to continue training.
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