uhhh... suprising. So few people even mentioned any of the Fatal Frame games.
F.E.A.R was pretty scary. But as Yatzee said, it's a little too predictable in the way of WHEN it's going to get scary and when it's going to be a (relatively) relaxing gun battle that isn't going to make you shiver and jump a foot in the air. Similarly, in F.E.A.R you are a supersoldier who can slow down time, which is cool, but you don't feel all that vulnerable.
But the Fatal Frame games were... something else. You just don't get a break, bonechilling, creepy and jump from your seat frightening from start to finish with no breaks and no relaxation at all. As starkly opposed to F.E.A.R, you are NOT a supersoldier, you play a weak, slow moving terrified girl, which makes you the equivilent to her in the nerves department. You feel weak and terrified with no way out.
FEAR was very good and scary. But Fatal Frame, me and my brother and his friend had to take shifts playing that game cuz we frequently became too creeped out to continue, and had to pass off the controller.