I was recently scrolling down the internet when I saw an interesting thread titled, “The absolute most terrifying movie you’ve ever seen.” Here were some of the responses with the most upvotes.
SPOORLOOS (aka THE VANISHING) (1988)
SaulGudbro wrote, ”SPOORLOOS (aka THE VANISHING). Go into it blind. Do not read anything about it. I did that, and it really freaked me out and stuck with me for a long time.”
Someone else supported the answer saying, “That film is so disturbing and strange. I loved it.”
Hereditary

One person wrote, “I’ll defend Hereditary till the day I die. When THAT scene came, there was an audible gasp in the cinema. The movie did not go anywhere as expected, and it was truly a ride.”
They continued, “The Texas Chainsaw Massacre did not give me one second to exhale. It was all too much.”
AntiChrist
Another user responded, “Antichrist! The worst scene in the barn. Stayed with me for months.”
This was supported by another person who answered, “A friend recommended this movie to me. I went in blind. To make a long story short, we aren’t friends anymore!”
The Exorcist
Another user wrote, “The Exorcist hands down- I can’t believe they made that in the early/mid-70s. It was absolutely terrifying. Also? The original Salem’s Lot miniseries scared me so much that I don’t want to sleep near a window.”
Someone supported this by saying, “I only ever watched this once and was hysterically crying as I was so terrified. Never watched it again.”
The Descent
Mastrkief said, “Huge horror movie fan-couldn’t finish “The Descent”. It made me too anxious/nervous/uncomfortable/terrified. I need to give it another go, but I haven’t worked up the courage.”
This was supported by a user who wrote, “After the movie, I had to walk in the park for about 20 minutes before I could get in the car to drive home. Every time I’ve shown it to others, at least one person screams aloud. It’s so claustrophobic.”
Poltergeist
One person responded, “Poltergeist, never looked at trees the same since.” This was supported by a user who wrote, “Carol Anne! Carol Anne!” I swear this goes through my head every time I hear of a child named Caroline. Lol!”
Another user had an interesting fact about the movie, “That movie has one of the most disturbing behind-the-scenes facts. Spoiler alert when the rain washes up the graves, and Diane winds up in the pool with a bunch of corpses, it turns out they were from real human skeletons, and nobody told her until after they shot it.”
Fire in the Sky
MustainSally wrote, “YES! That one scene, and you KNOW which scene I mean, stayed with me for MONTHS when I was a kid, and it still makes me wince thirty years later!”
Another user supported the answer saying, “It was a Sunday, and my dad took me to the movies, just the two of us. We saw Fire in the Sky. Aliens. I was 7. That ‘scene’ was the most frightening experience of my life.”
Requiem for a Dream

One person responded, “Taking a different approach, but “Requiem for a Dream!” I never want to watch it again.”
Another person supported saying, “I am probably drug-free thanks to that movie, I got it on blue ray but never watched it again, I would say it is in my top 20 movies, but never again.”
Sinister
Someone had this to say, “I’ll always suggest Sinister. The music is very well done in the creepiest way possible, and the sheer shock factor will hang with you for a while.”
This was supported by another user who wrote, “Yes!! This is one of my all-time favorites. The homemade murder reels are the creepiest thing ever, and genuinely just absolutely horrific. There’s something so unsettling about the old-timey look in some of them.”
The Stranger
One user answered, “I think it all depends on what type of horror scares you, but my money is on The Strangers.
This was supported by someone who wrote, “Excellent suggestion, I prefer my horror to have an element of reality in it compared to supernatural or monsters.”
Source: Reddit