I hate being startled, so Dead Space didn't scare me a lot, but mainly because it didn't do the whole "apprehension" thing. There was one part in the immediate beginning of Dead Space, where you've just got the plasma cutter, and you're walking around in a hallway, and the lights are only on in the hallway. Then you see a slightly darkened corridor offshoot, and a sign for the bathrooms, and the bathroom lights are completely off. And I sat there for like five minutes going "Ohh, I don't WANNA go in there because something's going to jump out and bite my face off! But there might be goodies in there!" And then there was a crash behind me, and I tore off into the bathroom screaming like a little girl, hiding in the stall. And then the face-eater came into the bathroom, and I just screamed and mashed the melee button until he was a pile of limbs. I then grabbed the health kit that was in the bathroom, changed my knickers, left the bathroom, and never encountered a scary moment ever again. It's the anticipation that does it for me, really. Doom and Doom 2 did it as well, you may have a fuckload of guns with which to dismember the opposition, but they'll surprise you, and get at least one good hit on you, and who knows, maybe there's a shitload of them, and you don't WANT to go down that dark corridor, but there's an Energy Cell Pack at the end, and you could really use it, but it's dark and scary, and then *BAM* trap door, five demons pour out, I jump and scream. I don't like genuinely scary games like Amnesia TDD, mainly because I have enough trouble sleeping as it is. But I do like games that startle me. If Dead Space did that bathroom bit more than once, with different locations, I would have enjoyed it more.
Also since the advent of Steam giving me great entertainment for ten bucks or less, I feel like paying sixty is a gigantic Kenshiro Punch in the balls. So no Dead Space 2 for me, until I can find it in the bargain bin, or maybe a dumpster.