When I was little I used to play Alone in the Dark on my brother's PC and I was scared to death, especially if I played at night. Now I find Alone's graphics hilarious and I wonder how I would have felt if I played Clive Barker's Jericho instead. I warn you: this is probably one of the scariest games you've ever seen, so don't play it at night. The demo allows you to play one single level, but that's enough to feel like you're starring a horror movie.
Inside those dark and pestilent sewers, you'll experience anguish when hearing approaching steps and fear when facing unknown monsters; you'll feel strange noises and see putrid corpses on the floors. But you've got an ace up your sleeve: as the game allows you to control the whole team, you'll be able to switch between team members and test their different abilities, such as moving objects or even healing other team members.
Unfortunately, our gaming PC fell a bit short of the system requirements, but overall I was able to get a very good impression of the game's amazing graphics.