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Mushroom Kingdom U

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New Super Mario Bros. U
Mushroom Kingdom U
SSBU-Mushroom Kingdom U.png

Mushroom Kingdom U across the series.
Universe Mario
Appears in SSB4 (Wii U)
Availability Starter
Crate type Normal
Maximum players 4 (Wii U)
8 (Wii U Ω form, Ultimate)
Bolded tracks must be unlocked
for Wii U Ground Theme / Underground Theme (Super Mario Bros.)
Super Mario Bros. Medley
Super Mario Bros.: The Lost Levels Medley
Super Mario Bros. 3 Medley
Fortress Boss (Super Mario World)
Athletic Theme / Ground Theme (New Super Mario Bros. 2)
Ground Theme (Super Mario Bros.)
Underwater Theme (Super Mario Bros.)
Ground Theme (New Super Mario Bros. U)
Ground Theme (New Super Mario Bros. 2)
Super Bell Hill
Ultimate Super Mario Bros. series music
Main: Ground Theme / Underground Theme - Super Mario Bros.
Alternate: Ground Theme - New Super Mario Bros. U
Tournament legality
Smash 4 Singles: Banned
Doubles: Banned
Ultimate Singles: Banned
Doubles: Banned
Article on Super Mario Wiki New Super Mario Bros. U

Mushroom Kingdom U (マリオUワールド, Mario U World) is a stage in Super Smash Bros. for Wii U and Super Smash Bros. Ultimate. Bowser is fought here for his unlock battle in Ultimate. Peach and Daisy's unlock battle in World of Light is also fought here in the Slide Lift Tower, while Jigglypuff is fought on its Ω form during its unlock battle in World of Light.

Stage overview[edit]

This stage possesses four different layouts; it switches between them when Kamek appears and casts a spell.

Acorn Plains[edit]

The Acorn Plains version in Super Smash Bros. for Wii U.

The starting version, set in a grassland. Features a large main platforms with three smaller soft platforms above.

Rock-Candy Mines[edit]

The Rock-Candy Mines version, also featuring some water spouts and a Big Urchin.

Set in the mountains, it features a single rock platform balanced on the tip of a spire; the platform balances like a lever.

Meringue Clouds[edit]

The Meringue Clouds version.

Set above pink clouds, features two walled platforms separated by a pit, with floating platforms above the pit and the right platform.

Slide Lift Tower[edit]

The Slide Lift Tower version.

Set in the inside of a tower, features two solid blocks which move along a rectangular rail. In their movement the blocks rub onto each other, and are able to push fighters and items.


Several other elements and hazards can appear on the stage, independently of the current stage variation:

  • A giant beanstalk which sprouts from the background and grows branches and leaves, which players can use as platforms. The beanstalk disappears after some time.
  • Droplets of water which fall from the sky, soon followed by a giant icicle that freezes any player who touches it while it is falling. After striking the ground, icicles serve as platforms which can be damaged and destroyed by attacks.
  • Water geysers which spout upwards, acting as extra platforms. Players who touch them will be lifted up. Some of these geysers carry damaging Big Urchins on top of them.
  • Various sets of Stretch Blocks, small blocks which act as solid platforms can autonomously stretch horizontally.
  • Several Tower-themed soft platforms which traverse the stage horizontally.
Nabbit, as he appears on the stage.

Nabbit shows up periodically when the stage transforms. He chases after players and tries to catch them in his bag; once he traps a player he attempts to float towards the upper blast line and KO the opponent, much like the Beetle and Boss Galaga items. Nabbit is treated as a fighter, and therefore is vulnerable to attacks, grabs, and items - he even takes knockback proportional to damage - and can be defeated by being launched beyond the blast lines.

When Nabbit jumps across the pit in the Meringue Clouds variation, it is possible for the player to be caught in his bag mid-jump, causing both the player and Nabbit to plummet off the stage.

Ω forms and Battlefield form[edit]

In Super Smash Bros. for Wii U, the Ω form is set on a flat rock platform with grass on top in the Acorn Plains portion of the regular form. Star KOs are possible here. The stage no longer transitions, which means Kamek never appears, and Nabbit, the beanstalk, icicles, water geysers, Big Urchins, and Stretch Blocks have also been removed.

In Super Smash Bros. Ultimate, Ω form and Battlefield form are similar to the Ω form in SSB4; however, the main platform is now made of the grassy soil found at the beginning of the Acorn Plains portion and is resized and reshaped to match Final Destination and Battlefield, respectively. The three soft platforms of the Battlefield form are based on the three soft platforms in the Acorn Plains section of the normal form. Oddly, Star KOs can no longer occur here.

Hazards Off[edit]

With hazards off in Ultimate, Kamek never appears nor changes the stage, which remains in Acorn Plains for the duration of the match. Nabbit is also removed.


Acorn Plains as it originally appeared in New Super Mario Bros. U.

This stage is a combination of several stages from New Super Mario Bros. U. The main stage variations are based on: its first world, Acorn Plains; its sixth world, Rock-Candy Mines; its seventh world, Meringue Clouds; and the various tower levels, particularly the Slide Lift Tower.

Water geysers, with or without Big Urchins on top, are common in the world Sparkling Waters, while falling icicles which can be used as platforms appear in Frosted Glacier. The beanstalk originates from the Sparkling Waters hidden level: Skyward Stalk.

Kamek is a high-ranking member of Bowser's army and one of the main antagonists in the Yoshi series, a Magikoopa who, in the recent New Super Mario Bros. games, appears at the beginning of boss battles to transform the arena.

Nabbit first appeared in New Super Mario Bros. U. He is a rabbit thief who steals items from Toad Houses: players then can chase him across levels to retrieve the stolen items, being rewarded with a P-Acorn upon capture. Nabbit also appears to take the prize in enemy courses if players do not retrieve it in time.

Update History[edit]

Super Smash Bros. for Wii U 1.0.6

  • Bug fix Fixed a glitch caused by throwing Nabbit and then quickly pressing the pause button to cause a multitude of character-specific oddities.

Super Smash Bros. Ultimate 3.0.0

  • Bug fix Fixed a visual glitch on the Acorn Plains layout where looking at two clouds from a lower angle will cause the one on front to overlap the other in a transparent sheet.

Tournament legality[edit]

Mushroom Kingdom U is banned from tournaments due to its several disruptive hazards such as icicles, Big Urchins, and Nabbit. It does, however, have a fairly neutral layout with hazards off, which has made its legality more debatable with hazards off.


Super Smash Bros. for Wii U[edit]

Super Smash Bros. Ultimate[edit]

Names in other languages[edit]

Language Name Meaning
Japan Japanese マリオUワールド Mario U World
UK English Mushroom Kingdom U
France French Royaume Champignon U Mushroom Kingdom U
Germany German Pilz-Königreich U Mushroom Kingdom U
Spain Spanish Reino Champiñón U Mushroom Kingdom U
Italy Italian Regno dei Funghi U Mushroom Kingdom U
China Chinese (Simplified) 马力欧U世界 Mario U World
Taiwan Chinese (Traditional) 瑪利歐U世界 Mario U World
South Korea Korean 마리오 U 월드 Mario U World
Netherlands Dutch Paddenstoelenrijk U Mushroom Kingdom U
Russia Russian Грибное королевство U Mushroom Kingdom U
Portugal Portuguese Reino Cogumelo U Mushroom Kingdom U


  • In Ultimate, Nightmare, Andross and the Squid Sisters cannot be summoned from an Assist Trophy on this stage. Additionally, Lugia cannot be summoned from a Poké Ball.
  • It is possible for Nabbit to get stuck under the metal platforms from the lift section during a transition and be KOd before even getting a chance to do anything.
  • If Nabbit is not attacked enough when he has a fighter in his bag, he will carry them towards the upper blast line. This action could be a homage to Tac from the Kirby universe, a fellow thief enemy that also makes various appearances in the Super Smash Bros. series.
    • Coincidentally, both of them have the "Item Gravitation" skill as spirits.