Hardest Worlds in the New Super Mario Bros. Series

Ah, the NSMB series. It revolutionized the platforming game for the second time, with the Wii entry being the first home console 2D scroller since Super Mario World . Without further ado, here we go!
The Top Ten
1 World 9 (New Super Mario Bros. Wii)

The map looks pretty epic

2 Superstar Road (New Super Mario Bros. U)

I have nightmares from this. The only easy one is follow that shell which is bad because you need to unlock it by getting the star coins in everything else.

This is really hard!

3 World Star (New Super Mario Bros. 2)
4 World 8 (New Super Mario Bros.)
5 World 8 (New Super Mario Bros. Wii)
6 World 7 (New Super Mario Bros. Wii)
7 Peach's Castle (New Super Mario Bros. U)
8 World 6 (New Super Mario Bros. 2)
9 World 7 (New Super Mario Bros.)
10 Superstar Road (NSLU)

NSLU is like Super Mario Bros. The Lost Levels but for a new generation.

The Contenders
11 World 5 (New Super Mario Bros. Wii)
12 Soda Jungle (New Super Mario Bros. U)
13 Rock Candy Mines (New Super Mario Bros U.)

I'm only adding this because I had a lot of lives lost in this world

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