That's why we fallout 3 fans dislike FNV, it was focused too much on dialogue and writing thus making the mojave wasteland boring and repatative. But I did like vault 3 and 34 and the deathclaw island
Hey, I'm a Fallout 3 fan and I love NV!
But seriously, Vault 34 scared the hell out of me, not because it was that creepy, but because I kept getting lost in it, slowly running out of rad-x and rad-away (In hindsight, I should have brought more). Actually, what scared me most is that I didn't even know it was there. If you don't know, there is a one-way entrance on top of the hill that V-34 sits in. I was just climbing the hill, saw a pit and was like, "Hey, I wonder what this is-DAMMIT I FELL IN!" I didn't actually think of going Fast traveling out of it until I had already gone through and was in a creepy, radiation filed cave. Then, while trying to get out, I stumbled across Vault 34. This was quite the surprise, as the entry tunnel as nothing like any of the other vaults. I ended up running the hell out of there after I kept getting ambushed by ghouls from behind. I came back later much more prepared.
Vault 11 creeped me out little, and that little was based on what
wasn't happening rather then what was. I.E. that there were only very weak enemies, I kept expecting to round the corner and come face to face with an angry deathclaw. I knew that the last room had to have something pretty nasty in it, but when I saw
how nasty, I just said, "Oh [censored]."
Vault 22 creeped me out a little as well, but all vaults creep me out a little. Fallout 3 did that to me.
As for Fallout 3...
The Dunwhich Building didn't actually creep me out that much on my first playthrough. I had managed to miss every single paranormal
thing (Aside from that "vision", which freaked me out for a sec), and every note on what was going on. I also had no idea what it was based on at the time, nor did I know at all until someone started talking about it on the forums. However, with all that said, the Dunwhich Building
did creep me out on m second playthrough, even though I knew it was haunted. In fact, that made it worse. Since I had been through once already there was no real mystery, however the logs I had found did clue me in on things I had previously missed. Overall, the Point Lookout quest did nothing for me. I had already cleaned it out at that point so I kinda just waltzed in and burned the damn book.
Vault 87, on my first playthrough, creeped me the [censored] out! I was running through it as fast as possible just so that I could get the hell out of that damn place. Something about all the supermutants not wanting to die, and the fact that, at the time I didn't know you could repair things had me going around the vault with mostly destroyed weapons, barely able to kill a mutie and take his gun from his corpse. The lack of weapons, as well as the lack stimpacks meant I was dieing a lot, every time reloading in to that rusty, dim, red hellhole. Even today I still hate visiting it, even though I know exactly what to expect, thus making it a cakewalk. It is still me least favorite place in Fallout 3 to visit.
Vaults 106 and 108 amused me more then they creeped me out. What with all the GARRIES(All hail overlord GARY!!) and the talking to myself via terminal to "Breath deep in the blue", then refusing to talk to myself.