Therefore, none of the following information can be found by normal means.
| Special World (unused world) | |
 
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| Game | Newer Super Mario Bros. Wii |
| World number | F (unofficial) |
| Levels | 9 |
| Bosses | None |
| Game Progression | |
| Previous world | None |
| Next world | None |
Special World (called World F by fans) is an unused world greatly resembling Super Mario World's Special Zone that was intended to be in Newer Super Mario Bros. Wii, but ended up being cut, supposedly due to time constraints and the impending release of the project. Unlike Cutland, the other unused world, there are actually levels that go with this world, but were also unused. As these levels were unused, they lack names. These unused levels were released by user mariomasters1, renaming all the levels and giving the world number the letter F.
As suggested by the unfinished secret exits in these levels, it is possible that these levels would require secret exits to progress through the world, as the game files show that these levels (including inaccessible ones, such as the one in Gnarly Granitemine) have a secret exit.
Levels
This world contains 9 levels, not including one unfinished level.
| Level number | Level name | Preview | Description |
|---|---|---|---|
| F-1 | Gnarly Granitemine | 
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| F-2 | Radical Plateau |
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| F-3 | Spectacular Cumulus |
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| F-4 | Fantastic Mountaintop |
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| F-5 | Outrageous Park |
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| F-6 | Amazing Wetruins |
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| F-7 | Crazy Bang Bang Bridge |
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| F-8 | Name Unknown |
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| F-9 | Name Unknown |
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Trivia
- If these levels required you to complete its secret exit to progress through the game, it would have been a reference to Super Mario World’s Star World.
