What do you guys find scary?

[The Shanus]

I would find things like the bones falling scary, but not because theyre falling, but because they attract monsters. I would like to see a map where the monsters are always patrolling, and many things in the environment are "accidentally" knocked over by the player, or something makes a very loud creak, and this draws the monster. It would take alot of scripting and planning however, and might be hard to build up suspense and whatnot. But the player would be scared of the environment aswell as the monster.

Also - this is cheating. Unless it's a discussion, in which case it shouldn't be posted in this thread. Support does not mean "tell me what to put in my custom story"!