Fear? that's what my SHOTGUN is for!
So called "scary" games can make me jump a little but no more than that, being startled at those cheap ass pop-out-and-go-boo scares and actually building a sense of fear in a person are different matters entirely. however as a kid I couldn't play ocarina of time for 5 months because I got stuck out in Hyrule Field, heh. that's the only time I've ever been truly AFRAID of something in a game... that is until Dark Souls came out.
I wont spoil anything major but if you want absolutely no plot details then skip the next paragraph, you've been warned.
OK so after you get one of a pair of certain major milestones early on in the game and go back to the central hub area, then walk into the large pool of water you would probably notice that someone is snoring ABSURDLY loud. but upon searching the area you find no new characters, and only one person making a passing mention of the noise giving him a headache. so you move on and eventually get that 2nd big milestone, go back to the shrine, go up to the pool and see that in place of the water is a massive gaping hole in the ground with a GIANT head protruding out.
Now I wont post a picture in fear of mod wrath but the way this thing looks just freaked me the hell out on some subliminal level. not even really sure why, might be the neck. also the fact that it's so well spoken kinda weirded me out too...