Thief 2 was a very scary game, indeed.

Though, I really hate scary games - I don't want to play games that make me feel unwell. I often don't find the time to play games. So.. when I actually play a game, I want to enjoy it. Funnily enough, I played and finished The Suffering I and II and they were scary as well, but like Thief I - III, there are game-elements which were more dominant and more enjoyable as all the "scared-to-death" things.