Asklemmy

Playing Alien Isolation in VR. I couldn't get past the medical bay level level due to actual fear of death by heart attack.

In 2003 I watched the Exorcist movie that came out. It freaked me out so much my pupils dilated enormously like I was tripping, and then they stayed dilated for three days afterward.

I couldn’t be alone at night for over a week so my girlfriend came and stayed with me to keep the monsters away.

Inescapable fate from 'Final Destination.'

Buddy Holly and Carole Lombard both decided to get in a plane at the last minute. Some tourist decided to go to the World Trade Center instead of the Metropolitan Museum. If you start thinking about it, it can drive you crazy.

Contingency, from Local58

Emergency broadcasts of any sort, fictitious or no, already put me on edge, but the idea of the US government having one ready to go, specifically to order people to commit suicide to spite some kind of existential threat, is especially chilling.

https://youtu.be/3c66w6fVqOI?si=JsF_-x6A65iwbaC_

The Zone from the STALKER games disturbed me for years, but I'm such a grizzled veteran of the Zone now that I enjoy being in it. Night is still a little terrifying, though, and I don't care to use nightvision. Kills the vibe.

The Borderlands (2013) starts out as a regular found footage paranormal movie but the ending is just so... horrifying. It's simple but well done, something about it unerves me.

"I Have No Mouth, And I Must Scream".

I realize most might just see it as unsettling, but I've known someone like AM. Obviously not a giant supercomputer, but with that much hate. With that much blind rage, that everyone around him must suffer for daring to exist. That would happily keep someone alive just to bring them more pain.

As much as I love that story, every time I read it leaves me a little more terrified, looking over my shoulder, waiting until I'm put in my cage because I dared break free, even almost 20 years later.

The short-story Dread by Clive Barker.

Go in cold, no spoilers.

The segment in the original Creepshow where Stephen King is transformed into a plant.

Also The Fly.

One that I really like is Dear David by Adam Ellis. And yeah yeah, I know that he's going for the usual "true ghost story" marketing shtick or whatever, but these stories that don't just use cheap jumpscares and instead build a sense of constant threat and impending doom are the ones that make it harder for me to sleep at night.

~~I heard that the movie is trash though 🙈~~

The first chapter of “The Ministry of the Future” because it is very likely going to happen soon somewhere on earth.

A wet bulb temperature event that kills thousands

I could never get past some levels on the Playstation 1 Spiderman game because all the villains aside from Rhino and Mysterio creep me out.

The three body problem/rememberance of earth's past trilogy keeps me up a night every once in a while.

All of them, that's why I can't do horror.

The fucking needle-in-the-eye part from Dead Space.

Also, Scorn is kinda unsettling.

Signalis is a great game with a story that stuck with me for weeks. I wouldn't say it "terrifies me" but it's definitely both disturbing and heart wrenching.

There was this short sci fi story I think about a lot. I forgot what it's called but it's essentially about some kind of particle (it's physics related) that floats around the universe and has the ability to engulf everything in it's path or something? The story is about the last few hours on earth when one such particle happens to stumble into our solar system. Ill have to dig it up.

Edit: Found it! It's called "the blue afternoon that lasts forever"

Link

The stupid zombies in Thief. Just the first one you encounter. It's lying on the ground with flies flying above it. And every time you go near it it gives out this loud awful moan. I hate it!

But the game is too good not to play.

Not sure if this is what you were looking for, but this song is a masterpiece of horror manifest through audio. In fact the whole album is a piece of art, troubling and dark but so well crafted.

https://youtu.be/CwnxBWWLy9c?si=CAiSx58pHDkFMscQ

Edit: fixed wording

The Jaunt by Steven King

One of my favorites short sci-fi stories ever.