Out of the four NES Mario games, this one is easily the best. The other games have aspects that bother me but this one doesn't have too many. The main issues are how long some of the worlds get, which sucks because I don't like a handful, namely the water and ice lands. The dark land is short, but it's more frustrating than fun. The rest of the game is still good, the dark land is the only one I truly don't like. The new power ups add so much more to the typical Mario formula that really paves the way to future games. Overall, I'd say this game is definitely worth checking out to see how the games evolve over time.