Seems to be a genre of game you either love or hate.
Played a few in my time and am currently working my way through Jonathan Boakes The Lost Crown. Not a lot of action as you would expect but a very spooky atmosphere. Interestingly enough he seems to have taken a lot of his in-game locations from real places in Cornwall.
Game link to real locations -
http://www.thelostcrown.co.uk/realsaxton
Any other good ones out there?