From the Super Mario Wiki
The Mini-Game House is the Mini-Game Mode of Mario Party, where players go to play minigames with friends or alone. It is held by a chubby Toad called Puff. The Mecha Fly Guy can be found and used here once he is purchased from the shop. There is also a separate mode called the Pot O'Skills, which is replaced by the Mini-Game Trial in Mario Party 2, where the players play for coins in minigames as they go around the track of Mini-Game Stadium.
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