I was a bit disappointed in the turn Fahrenheit/Indigo Prophecy took during the game. For me it went from being a great plot to a pretty boring one. :/ Had to mix in that supernatural crap.

Well, there's obviously Silent Hill. They're all for PC too, except from the 1st one. The only one linked to SH 1 is SH3, so you can easily play the other 2 without confusion.

And then there's Sanitarium, also a PC game. One of my favourites, and I think you're gonna like that one too. ;o Look it up.