Undertale is a great game, that can be quite creepy at times... especially in the genocide route, whenever you fight all of the enemies in one particular area, this song will play. And when usually a battle would initiate, it just pops up with ''But nobody came.'', it's flat out creepy that when you kill everybody, this is what you get in the end... one disturbing song in quite a disturbing moment if you're doing genocide mode.