Fallout has always shown horrifying events like raiders hanging up corpses, gore bags, tunnels filled with feral ghouls, but one theme that has never really felt like it had a place was actual horror, not horror like encountering a really hard enemy and being scared of it one shotting you before you run out of AP, but genuine tense horror.
***Fallout 3 spoilers***
Within the game, there are some tense situations or areas, one example being fallout 3's vault 106, the enemies weren't really a threat when encountered and it never really gave the feeling that you would die, but it sticks out in my mind as one of the few areas that just genuinely struck me as creepy, the atmosphere, the situation, cutting in and out of reality and temporarily losing track of where enemies were until your hallucinations stopped, it was all very well done and it made those bat wielding lunatic vault dwellers even scarier than encountering a deathclaw and because of that it is one of my favorite areas.
Should more areas strive to be more scary? where its not just a dungeon with enemies shrewn throughout, but maybe you are left alone for a moment with ominous music, or its even darker than usual and your light is relevant, maybe for some reason your enemy detection stops working and the enemies hide and try to ambush you.
Obviously with things like VATS, and enemy tracking, horror isn't easy, but is it something that should be explored more in fallout 4?