Subnautica has some creepy overtones.
Subnautica is not a horror game, and was not intended to be scary; and yet the way it captures the dark, oppressive nature of deep waters makes it an extremely terrifying experience.
Signal Simulator is a game about being completely alone in a base in the desert doing science stuff in search of aliens. It's not really horror but there's plenty of uneasy stuff in it.
There's also a newer game inspired by it called Voices of the Void which is more actively developed. Technically, it's not horror but the developer likes to fuck with you in all kinds of ways.
I've been playing DREDGE and it definitely has the creepy element down. It's gotten me hooked for sure
Half Life/Black Mesa. I replayed it recently and I had forgotten the level of unease that pervades most of it. While short of horror, there's been an obvious disaster, people are panicking, and it's unclear to the PC what is going on for most of the game.
Check out Manlybadasshero's channel, he plays a lot of games like that. CJU does as well. A lot of them are very narrative-based, which might not be what you're looking for. The Coffin of Andy and Leyley for example, freaking fantastic game but it's a slow creepy burn rather than action-oriented. Little Misfortune is another personal favorite, and the Tartarus Key. They also play some random ass games like this https://www.youtube.com/watch?v=2VWL4vKRp8U
where it's a dystopian world and you never really find out what's going on, which sounds similar to what you're into.
about Little Misfortune, i remembered of Fran Bow
Patient Gamers
A gaming community free from the hype and oversaturation of current releases, catering to gamers who wait at least 12 months after release to play a game. Whether it's price, waiting for bugs/issues to be patched, DLC to be released, don't meet the system requirements, or just haven't had the time to keep up with the latest releases.
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