Really one of the few films that represent a true nightmare. Sometimes, I didn't knew if what I saw was a dream or a true scene. Ari Aster said it's one of most frightning and visionnary works of stop-motion animation that he never seen and I totally agree with him. It's not just a compilation of disturbing sound & images, it's a terrifying false fairy tale about cult and isolation. The scenes are all unique including the opening scene with archive videos. If you are lucky enough, go and see it at the cinema.