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New Super Mario Bros. U Deluxe

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Title Screen

New Super Mario Bros. U Deluxe

Developer: Nintendo EPD
Publisher: Nintendo
Platform: Nintendo Switch
Released internationally: January 11, 2019

AreasIcon.png This game has unused areas.
CodeIcon.png This game has unused code.
DevTextIcon.png This game has hidden development-related text.
GraphicsIcon.png This game has unused graphics.

So very stubbly.
This page is rather stubbly and could use some expansion.
Are you a bad enough dude to rescue this article?
Notes: Many more unused levels to document

New Super Mario Bros. U Deluxe is an "enhanced" port of the Wii U game that includes the DLC from the start, the ability to switch characters on the fly, and...that's it.

Oh, and Toadette is playable now. Whether or not this is a good thing depends on who you ask.

Unused Levels

There are 100 levels that were not present in the previous game.

Boost Rush

Even though Boost Rush was removed from this version of the game, all of the levels that were present for the mode still exist in the game's data.


Area 1

An area that is underground. It contains two zones.

Zone 1

Zone 1 is very unfinished, as the tiling was not complete. It contains pipe exits and entrances, a pipe cannon, rotating coins, brick blocks, and some location triggered coins. There are no enemies.

NSMBUDX 40-1 A1 Zone 1.png

Zone 2

Zone 2 is very obscure, as it has no clear purpose. It has Paragoombas and Paratroopas, but no ground. There are rail tiles that are in rows. The zone is very tall, while the top is the only part of the zone that has sprites. The bottom of the zone has ground tiles laid out on the bottom left part.

NSMBUDX 40-1 A1 Zone 2.png

Area 2

An area that is in the sky. It only contains one zone.

Zone 1

Like Zone 2 in Area 1, it features a very tall zone, which is a whopping 11,616 blocks, while the top part is the only one that contains sprites and objects. The entrance is set for Mario to jump from below, onto the only platform present. An autoscroll controller will move the camera downwards using a path that extends from the top of the zone to the bottom, while one of the green pipes on the right move. However, this level is impossible to beat, since Mario will die before even getting close to the bottom of the zone.

NSMBUDX 40-1 A2 Zone 1.png

Area 3

An area that is in a tower. It contains three zones.

Zone 1

The first zone is a basic complete zone. It features moving rectangular moving platforms, Fire Bros, and Dry Bones. The pipe at the top of the zone takes the player to Zone 2.

NSMBUDX 40-1 A3 Zone 1.png

Zone 2

The second zone is also complete. This zone is classified as the midway point. At the top of the zone is a door to the boss battle. There are two secret pipes that lead to two star coins in this zone:

  • About halfway up the zone on the right side, there is a pipe that is hidden behind Layer 0 tiles. This will take the player to Zone 4.
  • Not too far above the first secret exit, there is a secret Fire Flower block on the right side of the zone, above a ? block that gives a coin. There is a platform hiding above this Fire Flower block, after the player does a walljump upwards. The pipe takes the player to Zone 3.
NSMBUDX 40-1 A3 Zone 2.png

Zone 3

Zone 3 is a secret area containing a star coin. The player has to advanced upwards while climbing moving gates. The star coin contained in this zone is the 3rd star coin.

NSMBUDX 40-1 A3 Zone 3.png

Zone 4

Zone 4 is another secret area containing a star coin. This one is more straightforward, as it is a simple climb up. The star coin contained in this zone is the 2nd star coin.

NSMBUDX 40-1 A3 Zone 4.png


40-2.sarc contains a sky-themed level that uses the correct sprite IDs. However, it is very unfinished. The level contains two zones; Zone 1 has a red coin challenge with rotating coins and Paratroopas. Zone 2 just contains player-activated coins and a few platforms.


40-3.sarc contains a underground-themed level with poison water. The level contains three zones; Zone 1 has rotation-controlled crystal blocks. Zone 2 and 3 are very similar; they only contain widely spread out platforms that are impossible to jump to.


40-5 contains a desert-themed level. It contains Stone-eyes that are tilted to get farther in the level. However, this level is unfinished, as it has missing wall tiles. This level seems to be beatable.


40-11 seems like an early version of 1-2 on the final game.


Just like 40-11, seems like an early version of 1-2, this one is more advanced, but yet not identical to the final version

Unused Sprites

All of the previously unused sprites in the previous version are also unused in this game. The models have been upgraded to the new model format as well. All code associated with these sprites has also been carried over.

Unused Graphics

Tileset Lines

In unused level 33-5, where the tileset is the only thing that still exists, red lines seem to appear over a few of the tiles, which must have been used by the developers to know which piece fits where in the tileset.

NSMBUDX Pa1 33-5 1.png

These can also be found in 33-11 and 35-7.


Unused Icons

The Purple Exclamation Mark Button and duplicate Peach's Castle icons in the original is still here. But the red pepper and star icons are gone.

(Source: Original TCRF research)

Development Text

File=%%PROJECT_TOOL%%\External\ImageMagick\convert.exe, Arg=%s.tga %s.jpg, WaitEnd = True, WindowStyle = Hidden
File = cmd.exe, NoWindow = True, WindowStyle = Hidden, Arg = /C del "%s"

Some strings relating to image conversion using the open-source PC tool ImageMagick can be found in the code (ExeFS\main).

(Source: Original TCRF research)

Internal Project Name

The internal project name for the game is RedPro-S, according to multiple strings. Much like Captain Toad: Treasure Tracker, the codename is the same as the original Wii U release with an "-S" tacked on.