What about Dark Fall: The Journal, Scratches or Fran Bow?

The Void

How about Call of Cthulhu: Shadow of the comet or Prisoner of ice?
Or maybe Clive Barker's Undying - Yes, it's a shooter, but has some intriguing story to it.

Hey, so SOMA is pretty good. Oh, and crazy, it's on sale now :o

Go play Sylvio or Anatomy.

Can't say you won't regret it, because it's all up to you to get scared in them.

In Sylvio, you are basically looking for paranormal activity, on Anatomy exploring a house.

Get scared. ^^

Freddi Fish 2: The Case of the Haunted School House is easily the most horrific horror game you'll ever play. Seriously, that game is a full-proof cure for constipation.

silent hill 2 and 3 both create unpleasant atmopshere where you have no idea whats waiting for you beyond that thick wall of fog

unless you play the hd collection then it becomes a bit of a joke with a solid wall of fog that moves in front of you while darth sunderland wheezes on

I'd highly recommend the Dark Fall trilogy (The Journal, Lights Out and Lost Souls).

Another games I'd suggest would be , [url=https://www.gog.com/game/fran_bow]Fran Bow, , [url=https://www.gog.com/game/layers_of_fear]Layers of Fear, The Park, the Penumbra Collection, and its awesome DLC, [url=https://www.gog.com/game/outlast_whistleblower]Whistleblower. Most of these have already been recommended in this thread, others will incur the wrath of "proper gamers", because they're "walking simulators" with some jump-scares. I still had a great time with them, and I do think even those two or three games that have jump-scares rely more on atmosphere than anything else, they're tense and thrilling even if they do have the occasional cheap scare.

I can't recommend Amnesia: The Dark Descent. That game is so overhyped that by the time I got to play it I was expecting way much more than what it delivered. You could still give it a try, everyone seems to think it's the scariest thing ever made, even if I fail to understand why. From Frictional Games, the devs, I'd rather suggest SOMA and the previous mentioned Penumbra games.


[EDIT] Also, I can't recommend The Cat Lady and its parallel sequel, Downfall: Redux, enough.

I'd recommend Alan Wake, but the monsters are kinda in your face. It DID rekindle my love for single player games single handedly, though.

System Shock 2
Stasis
Realms of the Haunting

I find Penumbra, Amnesia, Outlast, etc., to be very lame/boring and not scary at all, personally.

Cat Lady is a sequel or prequel, I forget. Point being, if you like it there is another one. I wish I could remember the name. :P
OH...It's called Downfall.

I'm not sure it's exactly horror. Heck, I'm not even quite sure if it's even a game but Knock, Knock is this perfectly weird sort of eerie and creepy rolled into one. Even the way the little guy stares right at you through the screen and mumbles his gibberish is just all sorts of great.

I'd call it horror, if for no other reason than it's very disorienting and very disturbing. Those are two things I always look for in a good horror film so why not a good horror game.

also:

I Have No Mouth and I Must Scream