Anyone who's played this game probably knows how good it is. The level design is probably the best in any 2D Mario game I've played, and honestly one of the best 2D platformers I've ever played as well. The sprites are very charming and still hold up to this day, and the game has a lot of stuff that I can sum up with one word: unique. The levels don't follow the basic themes like desert or ocean or ice land and instead try and do more unique things, like the Forest of Illusion that requires you to find a secret exit in a level to escape. The bosses have different ways of beating them like pushing them into the lava or jumping on them when they appear on the right pipe. The difficulty of the game is just right, some levels feel really hard but not impossible. The only frustrating levels other than some later ones are the Ghost Houses, but those are usually frustrating anyway. Overall, I'd definitely recommend playing this game as it does live up to the hype it gets.