Yep, as other have said, this is easily one of the best games on the NES, regardless of genre.
Also, I agree that it feels more advanced than Zelda, but hey they did come out 4 years apart.
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"Absurdity is what I like most in life, and there's humor in struggling in ignorance. If you saw a man repeatedly running into a wall until he was a bloody pulp, after a while it would make you laugh because it becomes absurd".
-David Lynch