This mod from epij makes the game darker and more scary.
this is a little user.ltx tweak that mainly merges most of the "realism" and "ultra high gfx" tweaks to one, for a very dark and scary ambient expierience.
i found the "vanilla" shading way too bright and too much lightflooded. now shadows are darker, more scary, and you will find yourself more comfortable near light sources like campfires or in houses.
i made this to make Oblivion Lost more scary but you can use it with anything, it will not conflict with any mod.
XP: C:Documents and SettingsAll UsersDocumentsSTALKER-SHOC
Backup your existing user.ltx file and copy the one from this archive to this location.
This user.ltx sets ALL gfx effects to maximum. my GeForce 9600GT has no problem doing so. if your graphics card will most likely not withstand the maximum recheck the Graphic section in your options.
Also your keybinds have to be redone (or if you good at tinkering, copy paste them from your own user.ltx file and overwrite mine)
Enjoy and fear,