I perfer New Super Mario Bros U. But its is up to the gamer and what your playing style. I personally love New Super Mario Bros U more. But they are both fantastic games.

Personally, I would say NSMBU. While Scribblenauts is a quality game, Nintendo first-party games almost always have that extra layer of polish that puts them over the edge for me.

i would get both. there both great games that will give you hours of fun. but if i had to pick one it would be NSMBU