10 Trippiest Horror Movies Of All Time

10. Annihilation

Alex Garland's unforgettable sci-fi horror film Annihilation is so damn left-field it spooked one of the movie's own financiers, David Ellison, who deemed it "too intellectual" and tried to convince Garland to reshoot portions of it, thankfully to no avail.

If Annihilation's most base synopsis doesn't sound terribly unique - a group of scientists venture to investigate a mysterious alien anomaly - Garland's execution is anything but.

Without giving too much away, Annihilation is so much more than a thinly-veiled sci-fi slasher flick in which the group is picked off by a fleet of grotesque monsters - it's a totally unique vision of an extraterrestrial force and what impact it might have on the human flesh.

Fusing discomforting body horror with psychedelic otherwordliness, Annihilation is a skin-crawlingly offputting and yet compulisvely compelling horror film all at once; one which offers up one of the most beautiful and disarmingly unexpected third acts of any genre effort from the last decade.