What is the perfect eerieness?

[Googolplex]

Yes, I did not like shooters because the horror would be lost (sry for my bad english but I think you understand what I mean).
This is the point why penumbra is the best horror game yet.
If I see a corpse in daylight and middle in the town it will be just a little scary. And if you play penumbra middle in a disco or in a party with many other peoples, it is not scary. But when you play it alone at home in the darkness, it is very scary.

The corpse on my picture shows a real corpse. It is not preparated!
Its from the movie "Unrest". Its first horror movie with real dead human bodies.

I think it is very scary but corpses alone are not eerie enough.
The environment must look like a nightmare.

All this things combined results a very good horror-game. And you should not have guns or other shooting-weapons. Frictional Games makes it right to uses objects as weapons for their games.