NSMBW has a ton of awesome levels to play,some you will love,some will wanna make you throw the game out the window whats your favourite level?

mine is a tie between 4-5 and 8-7.
i like 4-5 because i love world 4's island levels(not underwater)because of epic design and stuff and its a fun levels with lakitus,yoshi,and works great for multiplayer. 8-7 has the bonecoasters which are friggin awesome and fun as hell

9-7

It's hard for me to tell. I like some of the forest levels and some of the ice levels to. But my favorite one, the one I can't ever get frustrated with is 1-1.

A tie between 8-7, 9-7, and 8-Airship

Bowser's Castle. I usually never die till i get to Fat Bowsa. xD