A very, very good update to an already great puzzle platformer. This version does have some problems though. The hurtboxes for Shy Guys seem to be a bit messed up - it's not uncommon to jump onto one and somehow die - and this is especially prominent in the new icy world.

Speaking of: the new levels are so much worse than the others in the game. They have neat ideas but they are not executed well at all. The main reason is that the ice physics (and particularly Mario's weird spin jump) don't feel like they were properly thought out. They might work well like this in a 2D platformer but these levels are usually barely larger than a single screen; the DK boss fight using this gimmick makes it especially apparent how much of an issue this weird skating jump doesn't fit into the slower, more-methodical movement system of the rest of the game.

It's a stark reminder how Nintendo Software Technology hasn't been allowed to make a new game in over a decade besides the other Mario vs. Donkey Kong games that nobody cared about and some crossword things on the 3DS. Hopefully they'll be allowed to make new games at some point again.