Off Topic > Games
Survival Horror games?
PJ Boy:
Fatal Frame.
TheScout:
Minecraft isn't Horror with the default skins.
What about Condemmed and Saw?
Fizzles:
It can be.
Rainbow:
Minecraft
Sirrus:
The first and last STALKER games. Clear Sky was meh on the scary.
Seriously though, the underground labs and bunkers in that game are pant stuffting, especially if you have atmospheric and texture skins and have a good enough computer to max it out.