Scariest/creepiest/most unnerving sequences in any game

[Omega500]

The first Resident Evil when you go down the L-shaped corridor and Wham! a dog jumps in from the window you kill it after picking the controller up and think its all over and Wham one more jumps out

And the static on the radio in silent hill 2 mixed with the fog

 

[Korten12]

The Ravenholm level in Half-Life 2. Especially when the fast zombies come.

I never found that level to be scary.... Wonder why some many do...

 

[Always_Remain]

So far all of Silent Hill 2. I just got into the Otherworld for the first time and I'm afraid to go on. That snotty little brat!

(And I know it sounds pathetic but when I was like 10 or 11 I was so afraid of Doom 3 at certain parts, I had to stop playing it for days. It was my first real experience with Horror elements in games and I'd been trying to avoid them, now I embrace them. )

 

[Rylot]

Drakengard's giant flying cannibal babies really got me.

Allow me to bring back those memories for you! >D

Thanks for erasing years of therapy, I'll just send you the bill then?

 

[Gothtasical]

i would have to say for me personally would be going through the dunwich building in fallout 3 in comeplete darkness besides my tv and alone with nothing but a pistol... and then you get to the end... i couldn't get outta that building fast enough idk y

 

[CrazyGirl17]

That scene in The Legend of Zelda: Twilight Princess after you get the last bunch of Tears of Light, and the Light Spirit explains the game's backstory.

Here, watch it and be creeped out, won't you?
http://www.youtube.com/watch?v=LwBcGqyFbIM

 

[Cuddly Knife]

*ahem*

Ravenholm was fucking weak. It really boggles my mind how many people swear by this section. I found it to be the most boring in the whole boring game of Half Life 2.

My votes for scary/WTF? include the Pyramid Head chase scene with Maria in the depths. Yeah. There are also plenty of bosses within Silent Hill games that should be mentioned.

My first playthrough of Eternal Darkness was also unnerving for various reasons. Main one being the sanity meter randomness.

Someone mentioned all of Fatal Frame 2. Yes, that counts. Same for FF1.

 

[Ramin 123]

Drakengard's giant flying cannibal babies really got me.

Allow me to bring back those memories for you! >D

Thanks for erasing years of therapy, I'll just send you the bill then?

I've no idea what that game is but I'm after watching that and all I can say is WHAT THE BLEEDING FAGINA?

 

[Zhukov]

Amnesia. Just... Amnesia.

For example, the first time you encounter a monster, he just stands at the end of a hallway looking at you. He doesn't jump out at you, he doesn't attack you, he doesn't scream or roar, he just fucking stands there.
Oh, and there's the cellar sequence. Inching forward in pitch darkness following the sound of a woman's terrified whimpers while things shift about in the shadows just beyond the reach of your lantern.
And of course there are the torture chambers. But we don't talk about them anymore.

...

Honourable mentions go to the plaster splicers in Bioshock (get the fuck away from me!) and the ending of Penumbra Overture.

 

[RatRace123]

The first time I was playing Bioshock, I was pursuing the doctor. I saw the shadow of some guy, as I was walking closer to him, the lights flickered, his shadow was gone, my bladder was empty.

I figured it was coming, that still didn't make it any less unnerving.

 

[Cogwheel]

Well, to take a few examples: The water monster in Amnesia, the... vision sequence in Penumbra: Black Plague, and the entire Shalebridge Cradle level in Thief: Deadly Shadows.

Also, a few of Icarus's messages in Deus Ex are rather unnerving.

 

[silver wolf009]

Any minute from Amnesia. ANY.

Any? Even the opening cutscene?

Seriously though I could never play that game without hooking myself up to a cathader first.

OT: I'm going with the dentist from Dandy Dental in Bioshock 1 as my 1st choice.

Really though looking back on the Halo games I have got to say that the Flood is the best case of freezer horror I have ever had. Knowing what I know now, about their methods and history, the Flood are 10 fold for psychologically frightining to me, just the thought of being devoured and having your mind slowly pulled apart, all the while the 'other' laughs at your pain as it picks apart your memories for your loved ones in its never ending search for more food.

Reminds me of this little unnerving gem:

And I could never leave out this piece of nightmare fuel.

EDIT: In case emmbedding isnt working.
http://www.youtube.com/watch?v=9eg6PdFdAFg
http://www.youtube.com/watch?v=18sKNMm5KSI&feature=related

EDIT 2:

And finally 343 Guilty Spark.

I found 343 guilty spark kind of scary when I realized he was more than likely insane, if he was anything like A.I.s such as Cortana, because of his advanced A.I. that kept expanding the only way that he could keep functioning was by 'cutting' his intelligence "thousands of local years" of cutting he must have a horrible way of seeing the world.

 

[Apocalypse Tank]

pretty much all of Amnesia: The Dark Descent.

 

[Dommius]

Since alot of people said Amnesia i downloaded the demo... That was a mistake, i am quite terrified right now. Seriously, what the hell is wrong with that game?

 

[General_Potatoes]

Probably the regenerating things in dead space. those things were so damn annoying

 

[natster43]

One thing I thought was scary was the School in Fallout 3 the first time I played it. Hearing the Raiders speaking as they were trying to find me. I was on edge the entire time.
Another one that I thought was scary was the Library in Resident Evil 2. The music made it even more so.
While not scary, I feel the Beauty fights in Metal Gear Solid 4 were kinda creepy. Fighting someone who slowly walks towards you, as you hear the sounds of people being slaughtered and random things in the area moving.

 

[BourneGamer]

First time I played Perseus Mandate, playing late into the night when I came to this part:
Fiding myself holding Chen's arm afterward, then in a frightend daze I try to walk further on only to be pulled into the floor myself. It did it's intended job to me.

 

[RedDeadFred]

The Vaermina Daedric Shrine quest in Oblivion that you get the skull of corruption from.
You have to go to Arkved's tower. It is a very strange place.
There are many disturbing sections of this place and my stomach was in knots the whole time I was in it.
The most disturbing section of the tower would have to be Arkved's retreat because it is an empty void with a bunch of corpses hanging in the infinite blackness.
The Rending Halls section is also disturbing because of the creepy high pitched music that plays and at near the end when you turn the corner, there are bodies all over the place.

Creepy but awesome quest.

 

[Spellmaster]

Hmm, depends really

Ive seen and played many games with horror and 'scary' elements included, but i can say honestly there are precious few games i know of that truly frighten and scare players.

The kind of game that gives you ample reason to fear playing onward, that also enhances the game by forcing you to get used to being scared constantly, and really being on edge throughout.
there are games with jump scares and so forth but we can name better games can't we?

I can list:

Fatal Frame 1 and 2 , Eternal Darkness, Resident Evil 1-4, points go to Bioshock for some really unnerving scenes, Fear and Thief also rate highly.

 

[Zyphonee]

In Call of Duty Black Ops, when you play as Reznov and go into the nazi vessel. I found that scene not only creepy, but unbelievably well timed and executed. It's very immersive and the change of pace goes really well from an ominous feeling to please let me out of here. I think Black Ops had a bunch of really great and cinematic moments like that one or the semi-last level, in which the pacing settles down a little bit and decides the the game should be a little more cinematic whereas the rest of the bland wacky Vietnam action makes the game's great story overlooked (Besides from the ending, which was terrible).

In Silent Hill, when you finally get to understand what's going on, I felt extremely unsettled and dizzy to the point I couldn't play the game for almost a week as I just kept walking around thinking of the great deal of things I missed throughout the whole game.

Then, when in Max Payne, when you have flashbacks of your family getting killed. That part was downright great, it didn't even intend to follow the aesthetic of a Survival Horror, it just added mystery to the game, but did it amazingly well.