Okay, so even though I am an Amnesia: The Dark Descent fan, I hadn't actually played the game...
..."hadn't" because now I actually have. Ohohohoho

I played last week on Halloween (fitting, right?) for about 2 hours. It was fun but scary. I use way too much lantern oil. And also, when the computer you are playing on is also connected to really good quality speakers... well, the ambience itself is really freaky already. And I had to play in the dark! And it was connected to the TV so everyone could see.
I think I've got a thing for horror games though. Because even though I was really scared, it was really fun! Though the next part I have to go through is the infamous "water monster" part. Not excited about that... :[
Hydrophobia here I come...