This game is shit, plain and simple.
Oh, let's all get the warp whistle and warp to "big world"! Too bad big world isn't fucking fun, like the rest of this game. The entire thing is designed to anger and frustrate you. Oh, you get Kuribo's shoe on one fucking level! Wow, pardon me while I make the universal motion for a handjob. Kuribo's shoe fucking sucked. What did it do, exactly? It let you JUMP ON THINGS, something you were able to do the entire fucking game. Oh, also you looked gay.
There are some interesting power-ups in the game, such as Tanookie Mario, Hammer Mario, and Frog Mario. But guess what? You can get them on like 2 levels total, and if you fuck up and get hit ONCE, you lose them, FOREVER. Wow, that's fun! I love games that demand I play perfectly or have no fun, because I'm a fucking jap who strives for absolute perfection in gaming otherwise I kill myself.
Mario 3 may have been interesting or fun at one time, but the game is a worthless piece of shit in today's day and age. It's horribly flawed and full of punch-in-the-dick moments, much more so than it has moments that are just fun to play.