I played through this yesterday.

The graphics look great and it's neat seeing that art style applied to an SNES platformer. The music was fine but I turned the sound off after the first level because Mario shouts every single time he jumps, which gets annoying.

To me it was more difficult than the original due to some awkward jump physics and momentum, and wall/floor alignment. The original game was a bit off in this regard, but this one was tougher to get used to. You can wall jump in this version but it's not as natural as Nintendo's implementation in later games. I also died many times on the final boss.

Overall, worth playing through at least once.