They're not difficult to beat, they're just annoying and not really fun. They've also gotten ridiculously predictable – "Oh no, this door is a fake! Oh no, this platform is going to behave weirdly! Yikes, moving walls!"

I love the rest of the game though. Very happy with it overall. :3

You know what would have been a better million-coin reward? Getting some optional yellow and purple overalls instead.

Agreed with this. World 3 is probably actually my favorite so far, I really loved the levels and the boss fight is epic.

I've liked the water levels so far too. They seem a bit more interesting than in the other games.

Having 100%'ed the game now, here's where I think it ranks: Better (and more difficult) than NSMB DS, but not quite as good (or difficult) as NSMBW. It's a nice handheld experience though and I've enjoyed it so far. Now to keep on collecting those coins! 850,000 to go!

I just played with a friend, I had digital and he had retail, no lag at all. Not one bit.

I really enjoyed World 3. It was creative to merge the usual "Water" and "Forest" themes. I really like the level designs so far, they're much more clever and involved than the other NSMB games. I feel like I'm so bad at collecting coins, I'm at World 4 and I'm just now about to hit 10,000 coins. What am I doing wrong?

I've beaten every level in every world (including all the rainbow courses and cannons) , collected every star coin and moon coin, and unlocked every alternate exit, and have 1110 lives (triple crown). Why do I have 4 shiny profile stars and not 5?
I've even done every Mushroom house (red, green, and white) and have double checked that I have every alternate exit.
The only thing I haven't done is reach the 1,000,000 coin mark.
Has this happened to anyone else?

I had no lag while playing with my friend and we both have retail. @8GB Make sure you got the mushroom house in star world.

Well thats where I am at so if you are doing something wrong so am I . But honestly I didnt expect to get a whole lot of coins on my first play through cause right now I am more worried about learning the level layout. You probably are missing some secret areas in some levels and some secret levels. I for one havent unlocked any of the secret paths with the star coins cause I was afraid to use them cause I thought I would need them to enter the castles like in SM3DL.

You can't really get a lot of coins until you beat the game, once you beat it you can start coin rush with a golden flower

Yes, I have the Mushroom house in Star World, it gives you a star.

@8GB make sure all of your star coins are spent.And I don't know about this but try beating bowsers castle with luigi.

Star coin count = 0
And I haven't beat Bowser's Castle with Luigi, I'll do that now.

Just beat Bowser using Luigi, still no fifth star

Anybody know if the Star world is nightmarish-like, like it was on the Wii? (known as the Special World there) I dunno if they were all that hard, but like that one level with all the frozen blocks holding Nipper Plants with the Piranhas shooting fireballs from everywhere. xD

It's nowhere near as tricky as the Star World in NSMB Wii, I assure you.

No, it's nowhere near as hard, which is a little disappointing since I would've liked to have seen some of those King Bills filling up the screen in 3D.

Ah well it better be fun then at least, like the level with the...erm, Giga Omega Banzai Bill or whatever you wanna call it. lol

Star World was really easy.
I found every world to be very easy.
And the star coins were relatively easy to find with the exception of two or three.
New Super Mario Bros. Wii was more challenging with the star coins and Special World.