This might be my favourite 2D Mario game of all time. The levels designs and aesthetics are brilliant, the music is phenomenal as ever, and the new power ups are fun to use. It’s all perfect. It has the right level of difficulty so that anyone can beat it and master it through trial and error.

Slight spoiler, but not really.

The final level of the main game is the best final level in any game. Period. It brings back most level/world gimmicks in one level that flows naturally from one part to the next. It is so well done.