Game History
Keys could be found in Paper Mario for opening several doors in the game. Castle Keys could be found for Tubba Blubba's Castle, Bowser's flying castle and Peach's Castle. The keys in Tubba Blubba's Castle look more like a three leaf clover, while the Bowser ones have gold on the three leaf with blue in the middle. There would also be a key called Yakkey in Tubba Blubba's Castle that can open the Gusty Gulch Windmill.
Keys would be used much more in Super Paper Mario. They could be found in almost all levels to open locked doors.
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