I don't get why people keep harping on the jump scares in Outlast, yeah it had some, just like 'any' horror game out there (even Silent Hill got jump scares). The reason I love Outlast is the rest of the time. Like when you first get thrown through a window and have to navigate through the first floor? It was extremely unnerving and stressful for me to walk around, not knowing when or what would pop out and the game drew it out too, it didn't just go "boom, another enemy", you actually had to walk around quite a bit before the big fucker started to roam the halls.
And once you got down to the boiler room? I've never been so panicked in my entire life. Low on battery, dark environment, a fast psycho that is hunting me while I'm desperately trying to look for some button to press so I can get the fuck out of there. I felt sick to my stomach with dread after that. Constantly being hunted in a location I know nothing about but which the enemy knows everything about.
Outlast is the first game since Silent Hill 2 that's managed to actually fill me with pure dread.