It’s best looked at as an extreme guilty pleasure. There’s plenty of obscene humor and over the top violence to be had, but not much else. With a little elbow grease and perhaps a dash of maturity, Undertale could've been a harrowing psychological tale of one man's collapsing psyche. Sort of like the movie "Falling Down" realized in an interactive 3D environment, but including a coin-op arcade game called "Fag Hunter" in the game world it's not only not funny, it's disgusting and hateful. You'll play Undertale for the novelty, but its junk food gaming at best. Bad for your body and mind and only used for the short high you'll experience while you notice your boredom level increasing after hour number 2. The basic toilet humor running through the piece can't hide the short-lived gameplay, and leads to an extremely unfulfilling and tiresome experience that any sane person would be hard-pressed to push on with.