Crumbling Cavern

Not to be confused with Crumble Cavern.

Template:Worldbox Crumbling Cavern is the fourth world of Mario vs. Donkey Kong: Tipping Stars. It introduces Movable Pipes, a pair of green Warp Pipes that can be picked up and repositioned in different areas. Once a Mini toy enters one of these pipes, it will be warped out of the other one in a different area. All other mechanics that debuted in previous worlds make a return in this world, though without as much focus put on them. The only enemy species introduced in Crumbling Cavern, Fire Piranha Plants, are able to spit fireballs that bounce off the opposing surface and return to the sender, repeating the attack. Other enemies found in this world are Cannon Kongs and a single Shy Guy.

The background of Crumbling Cavern is a rugged underground zone with boulders and other mineral formations. Several pipes are spread between the rocks, and sewage flowing from a grated drain can be seen far in the background. The blue or indigo-hued environment of this area is reminiscent of the underground levels of most Super Mario games. The soundtrack that plays in Crumbling Cavern's levels is made of variations of the Underground Theme from Super Mario Bros., which was also the basis for the themes of Magnet Mania from Mario vs. Donkey Kong 2: March of the Minis and Mario vs. Donkey Kong: Minis March Again!, as well as Secret Storage from Mario vs. Donkey Kong: Mini-Land Mayhem!

There are two Bonus Levels that are set in this world, B-7 and B-8.

Levels

Level	Preview	Description	Enemies and obstacles encountered
Level 4-1		The first level in the game where Movable Pipes are used.	Spikes
Level 4-2		A level that combines the use of Movable Pipes and Cannons. Clusters of Rock can be cleared up by blasting into them.	Spikes
Level 4-3		A course with Fire Piranha Plants, whose fireballs can be captured between a fixed wall and a Movable Pipe.	Fire Piranha Plants
Level 4-4		A Multi-Door level where Springs are thoroughly used.	Spikes
Level 4-5		A course in which Cannon Kongs must be used to traverse a few passages.	Spikes, Cannon Kongs
Level 4-6		A stage with winding Purple Conveyors.	Spikes, Shy Guy
Level 4-7		In this level, Key Mini Mario and his gang have to travel across numerous Girders and a set of Movable Pipes in order to reach the locked Goal Door.	Spikes
Level 4-8		A small room full of Girders and Movable Pipes, around which a Cursed Mini Mario wanders aimlessly.	Spikes, Cursed Mini Mario

Gallery

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  Level menu in the Nintendo 3DS version

Level maps

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  Level 4-1

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  Level 4-2

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  Level 4-3

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  Level 4-4

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  Level 4-5

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  Level 4-6

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  Level 4-7

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  Level 4-8

Media

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Names in other languages

Language	Name	Meaning	Notes
Japanese	デンジャラスケーブ[?] Denjarasu Kēbu	Dangerous Cave
Italian	Grotta friabile[?]	Friable cavern