|Mario vs. Donkey Kong 2: March of the Minis
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Mushroom Mayhem is the first floor in Mario vs. Donkey Kong 2: March of the Minis. Mario and his Mini Marios enter this floor after Pauline is kidnapped by Donkey Kong, beginning their quest to save her. In the background of each room, a rendering of Peach's Castle can be seen. A floor similar to Peach's Castle appears in the game as the sixth floor, Toadstool Castle. The music tracks played on this floor are arrangements of the theme that plays in Mini Mario levels from Mario vs. Donkey Kong.
Most of this floor's levels feature Pink Blocks. Other level elements that appear on this floor include girders, Yellow Springs, spikes, conveyor belts, and elevators. The only enemies on this floor are Shy Guys, Piranha Plants, and Circus Kongs.
|Enemies and obstacles encountered
|The first level in the game, which introduces Pink Blocks and coins.
|This level introduces girders and Yellow Springs, along with spikes.
|This level introduces a Gold Mini Mario and the first enemies in the game.
|Spikes, Piranha Plants
|This level introduces conveyor belts, elevators, and Shy Guys.
|Spikes, Shy Guys
|This level introduces Hammers, which can be used by Mini Marios to defeat Shy Guys permanently.
|This level introduces a Circus Kong. When Mini Marios come in contact with it, it tosses them into the air. However, it can be temporarily stunned by a Mini Mario with Hammers.
|Spikes, Circus Kong
|This level features several conveyor belts, an elevator, and a Gold Mini Mario.
|This level features Pink Blocks, Hammers, and an elevator.
|Piranha Plants, Shy Guys
|This level features Pink Blocks, girders, Springs, Hammers, and an elevator.
|Shy Guys, Circus Kongs
|Boss Game 1
|10 to 25
|The first boss fight against Donkey Kong.
|Donkey Kong, barrels, barbells
Names in other languages
|Valle dei funghi