Heres my Fear scale;
FEAR 7/10
Some parts were pretty unnerving but you sort of knew when they were going to come. Theres no monsters and your crawling in a vent or something thinking come on where's that girl. The scenary did have quite as much atmosphere because I never really got the sense of being paranoid every moment of playing the game.
Resident evil 4 4/10
This game didnt really scare me because you could always see the monsters, and Leon was so badass at combat it wasnt like you were going to die.
Doom 3 6/10
Monsters just fly at you and try to scare you by surprise which can make you jump at some points, but after a while you get used to hearing a scream and seeing your screen shake. Those damng baby fish things are a pain in the ass.
System Shock 2 10/10
This game scared the hell out of me the first time, because of the horrific story and plot twists that occur. The character development also makes you scared more and more as you see a character evolve. The atmosphere is excellent as you constantly feel secluded and paranoid since monsters spawn at random places and you can hear them moaning in the distance. if they see you they will come running at you which can be very unnerving if your looking in your inventory then WHAM, a zombie hybrid is beating you.
The voice acting in the game is EXCELLENT, and the graphics are all right if you get the fan made rebirth mod.
I encourage you to PLAY THIS GAME, download it! The developers have given up rights to the game so getting it off a torrent is legal.