| sciencegeek11 |
You have received a lot of good advice. The one thing I haven't seen discussed (hope I did not miss it) is the effect of level on horror games.
Low level characters are much easier in a Pathfinder game to terrorize. They are still weak and particularly susceptible to things like disease, poison & paralysis. The players of low level characters are still able to feel fear when they run into a level drainer or incorporeal creature.
That is the key. Players must be out of their comfort zone and you need to be able to overcome the inherent Pathfinder CR appropriate encounter assumption. There are lots of ways to do this including no place to rest and no way to escape scenarios. Combine those with a ticking clock, some dangerous effects like disease or poison and some good spooky ambiance and you have a horror game.