i have two, the first one was when i saved my game at really bad time because just behind was behemoth. all i saw was a green giant running towards me, i didn't stand a chance. The second one was when i was inside the repconn test site and it was quiet and all of sudden i felt the erge of turning around, i did and all saw was this ghoul up in my face. I got so scared that i shut off the game because i wasn't ready for that LOL!

Currently my top one was visiting Old Olney. I had NO idea what was there. I was like oh theres a Vault there lets explore! I slowly approach the area and I'm like oook the whole area is blocked off, odd. So I proceed into the area, and BAM. Two freakin deathcalws right behind me. Safe you say I dropped the controller when I played on Console LOL.

Vault 106 in Fallout 3, really creeped me out when I first walked into it. Something about those hallucinations was really unsettling for me. Never went back in there. Been a few years since.

For me it was when you had to go into little lamplight and in between that and the vault. The super mutants there and then in the vault weren't very nice especially when you are a low level but that was one of the worst. Having to fight tactically even running away sometimes Wasn't so much scary but if anything that was the closest especially playing through the first time. Just have no clue what's going to happen.

I never liked it when I went into the metro. Walking round in the dark and then having a ghoul charge you isn't the best when you've never played before.

My scariest moment was when I was just going into the main quarry area, on fallout new vegas, where the biggest machines were, I heard a deathclaw behind me so I turned around and blasted him with my shotgun. But then when I turned around again to continue were I was going the mother and alpha deathclaws had somehow sneaked up behind me without me hearing.

In Fallout 3 it would definitely have to be when I was searching for The Family. Going through the metro tunnels I was expecting something to jump out and try and eat me and that didn't sit too well with me haha.

I say my scariest moment was the whole Dead Money sequence, I was low leveled, low on caps, low on ammo, low on health, and at that point, low on hope, I thought I was never gonna leave the Sierra Madre. It was a constant scene of me running away from the inhabitants, when I'd get some semblance of safety I'd stuff my face with large amounts of Chips, and other radiated junk food. Sure my radiation level went up, but so was my health. This was the case for pretty much the entire game. I never seemed to have enough .308 rounds or Microfusion cells leaving me only with spears and me throwing them, with a low melee weapon skill level, I constantly relied on overcoming them using my levels of health versus theirs, making fights tit for tat. This was all on Very Hard of course. It reached its worse once the fireworks went off when even more spawned causing me to mad dash it out of there, I also grieved at the sight of the holograms rushing me to find their source as fast as I can before they lasered me down. Even on higher levels I still don't like going there.

Playing old world blues with the talking stealth suit on, getting surrounded by a bunch of blood thirsty psycho robo dogs and skeletons in astronaut suits... and hearing.. "NO MORE STIMPACKS!" in the friendliest manner possible.

Mine would probably be saving right before getting greeted by a nest of Cazadors in NV, those things just tore right through me.

A Deathclaw appearing right before my eyes when trying to clear out Quarry Junction

Running out of ammo on your revolver in Dead Money, on Hardcore mode, during the Gala Event mission when the Ghosts are more plenty than usual.

Clutching that rusty Knife Spear while hearing the ghost people's grunts and heavy steps, no companions since they're all at their posts, out of stimpaks, crippled leg because I stepped on a bear trap, health is halfway done...

Yeah, it's pretty much safe to say I was genuinely stressed.

My most scariest experience has to be when I explored the dunwhich building in FO3. That place was the definition of hell. Another one worth mentioning is the glow in FO1. That place was so eerie in my opinion and mysterious not to mention that theme for The Glow. That's what made The Glow very scary for me to explore.

Uhh, my most scariest situation was in dead money dlc.. Damn the whole DLC is just creepy as hell. Anyway, the most scariest part for me when I had to get to that guy called Dog. It just was scary going through the level and those guys in hazmat suits attacking you.
I wanna play it again:D

My game autosaves right near deathclaws and my save is like 5 quests behind.. That always scares me.

One time when i was exploring fallout 3 i entered a building in the middle of DC area, it started appearing spectres like it was showing how life used to be on that building, i felt like i was playing doom...those scenes scaried the shit out of me, but i dont remember the name of the building

Ol' Olney while Mart's Mutant Mod was activated, I needed an adult... And some new pants.

I'm seriously laughing at all these terrible situations everyone has been in and I can relate. I was exploring the Great Khans camp in Fallout New Vegas and ended up following a path that led up deeper into the mountains. Little did I know, there was a nest of Cazadors waiting for me and I had not saved in quite a while. My heart was racing as I really did not want to reload and so I made a run for it! As a result, I ended up being dinner for a family of mutated wasps. However, this is of course before I discovered how easily Cazadors are killed with a 9mm or 10mm SMG. Additionally, Vault 108 in Fallout 3 scared the crap out of me as well. Gary? Gary!!!

That's true the dunwich is a one of the most scariest place in fallout 3.
The mine of silver peak in New Vegas was the first situation when i'm really terrified : When i'm enter in the mine, i have forgotten to activate the pipboy's light and it's completely dark inside the mine. I've seen there are enemies near of me but i didn't know where they were. When the first cazador is appeared to me, i was really very surprised and scared. As a result they were five and I died beacause of their poison.

Point Lookout was amazing because it felt so out of place, Not the mutant hillbillys, those were perfect. It was the setting itself, it felt so haunted and wrong, i can't describe it, it just felt like something was wrong with the place other than the radiation and gas bubbles..and hillbillys lol. Plus with the chinese spies, the concentration camp, "The Book", and odd things like the hanging dolls and the ever present fog that surrounds the area, its just great.