Can you recommend similar games? (Aside from Penumbra)

[Unhandled]

I would suggest Clive Barker's Undying.

I also played Call of Cthulhu: Dark Corners of the Earth, but I found it tedious and long. Near the end I actually gave up because it was so repetitive.

Undying had a better story, too, in my opinion. In both games you have weapons. There are games without weapons out there but I wouldn't say that the game has to have no weapons in order to be good.