Crumbling Cavern

Not to be confused with Crumble Cavern.

Template:Worldbox Crumbling Cavern is the fourth world of Mario vs. Donkey Kong: Tipping Stars. As with other worlds in the game, Crumbling Cavern introduces a new mechanic, which is a pair of Movable Pipes that can be picked up and repositioned in preset locations to suit the needs. 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.

Crumbling Cavern occurs inside a vast and heavily-rugged underground zone, littered with boulders and other mineral formations. Several pipes are spread between the rocks, and sewage flowing from a grated drain can be seen in the far background, sometimes obscured by other elements. The gloomy, indigo-hued environment, along with its cave and sewer themes, are reminiscent of the underground levels of most Super Mario games. This is aided by the soundtrack that plays in most of its levels, which is an arrangement of the Underground theme from Super Mario Bros. that is also the theme of 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 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