Damn near [censored] me self in the first 5 minutes!
It really is very well thought out on the tension side of things and scrabbling about for hiding places is incredibly effective at ratcheting it up. I like the idea of no weapons, just a camera and it really is scary with the headphones on. I'm only an hour or so in mind, so will have to wait and see how repetitive it becomes.
This is one of those games where next gen visuals as not key to the gameplay. That said, it would likely be even more scary if it had.
Top notch free game.