Ever played a game where you had an "OMFG *Heart Attack*" moment?

Just booted up Stalker again after a month's hiatus. What happens to me just as I'm about to walk into the first room after my save? A freaking semi-invisible zombie demon with a tentacle mouth pops out of nowhere, slashes me twice and kills me. Didn't help that I was wearing earphones with sound turned to high either. First time in a long time where I felt my eyes go wide, heard my mouth gasping and my heart skip a beat. I subsequently closed the game after that. Will probably play it again when I can get my friends surrounding me during broad daylight lol.  
 
Ever had one of those moments with a horror or action title and which game was it? 

Um...same game. Pretty much what you just described except with more girly screaming.

I HNNNNNNNNNNNNNNNNGGGGGGGHHHHHHHHHH'd through the goddamn Penumbra from the start to finish.
 
And Bloodsuckers in STALKER.  FFFFFUUUUUUUUUUU WHAT LAYER OF HELL SPAWNED THAT MONSTER OH MY GOD WHERE CAN I HIDE FUCK FUCK FUCK

Silent Hill 4. I peeked to the corridor from The Room

" I HNNNNNNNNNNNNNNNNGGGGGGGHHHHHHHHHH'd through the goddamn Penumbra from the start to finish.  And Bloodsuckers in STALKER.  FFFFFUUUUUUUUUUU WHAT LAYER OF HELL SPAWNED THAT MONSTER OH MY GOD WHERE CAN I HIDE FUCK FUCK FUCK "

" @Kblt said:

" I HNNNNNNNNNNNNNNNNGGGGGGGHHHHHHHHHH'd through the goddamn Penumbra from the start to finish.  And Bloodsuckers in STALKER.  FFFFFUUUUUUUUUUU WHAT LAYER OF HELL SPAWNED THAT MONSTER OH MY GOD WHERE CAN I HIDE FUCK FUCK FUCK "

Omg is Penumbra really like that? I bought the complete pack and I've been meaning to play it. I guess I should learn to be a man first >.>  "

Definitely had moments like that in Stalker myself -- also the first Fatal Frame got me quite a bit (tape recorder part especially)....I guess I let  psychological stuff get the best of me. 

The moment where a huge skinless Snatcher face suddenly swoops into the screen in Act 2. 

A lot of things in STALKER reminded me of the wuss that I am. Which is why I stayed on the surface most of the time. But THAT bloodsucker thought the same. I had a feeling something was up when I saw a few bloody corpses in that hut but I certainly wasn't expecting that thing.

Also the snowmonster in ski-something.

In BioShock, I was in this icy room, so it was hard to see. Anyways, I was looking at something, and when I tried to move and back-up, I couldn't for some reason. I turned around to see what was in my way, and there was this splicer just standing there, pressed up against me, staring at me. I did what I think would happen in real life: I screamed and beat him to death with a wrench. I kept hitting him over and over even after he was dead.
 
;(

" In BioShock, I was in this icy room, so it was hard to see. Anyways, I was looking at something, and when I tried to move and back-up, I couldn't for some reason. I turned around to see what was in my way, and there was this splicer just standing there, pressed up against me, staring at me. I did what I think would happen in real life: I screamed and beat him to death with a wrench. I kept hitting him over and over even after he was dead.  ;( "  

" @Kblt: Lol, unexpected but you're right. When I was 6 that thing scared the crap out of me because it moved so quickly and unnaturally.  "

A couple of Doom 3's closet monsters got me in a really bad way. I had a fully rigged PC back then with a pair of Seinheiser headphones and I'd decided it would be extra fun to play the game in the dark.

" Also the snowmonster in ski-something. "

" In BioShock, I was in this icy room, so it was hard to see. Anyways, I was looking at something, and when I tried to move and back-up, I couldn't for some reason. I turned around to see what was in my way, and there was this splicer just standing there, pressed up against me, staring at me. I did what I think would happen in real life: I screamed and beat him to death with a wrench. I kept hitting him over and over even after he was dead.  ;( "

" @Kblt: I just bought the games. Sounds like I'm in for a lot of "ARG! Alt+F4-and-forget-about-game" "

" @Kblt: I will try to become man enough to do that then :P Now that we're on the subject, what other games for the PC are freaking scary and gets under peoples skin (Stalker didn't do it for me :( ) "

Doom 3, that bathroom mirror thing really caught me off guard.

Doom 3 was good.  The Gamecube REmake of Resident evil has messed up.   Silent hill 2.
 
Fatal Frame.     That game still scares me to this day. I won't even play it.

First Bloodsucker wasn't nearly as bad as the first Controller. 
Or hell, the first poltergeist in X-18 was pretty terrible too. 
 
Also, anyone remember the spider tunnels in Penumbra? Goddamn.

The "Scary Maze Game" does tend to make one soil themselves. 

Eternal Darkness when you look into the bath. most people won't know what i'm talking about but to those who do will totally agree. never been so scared of anything in my life

 Also, anyone remember the spider tunnels in Penumbra? Goddamn. "

System Shock 2 does a good combo of creepy atmosphere and scares. A lack of ammo helps add to the apprehension at running into enemies, since most of the time you'll want to beat them with a wrench instead.
 
Admittedly I still haven't finished the game. I should try, but the Dark engine has its issues on newer versions of Windows.

Haha, the OP's reaction made me laugh.

I've jumped where games have caught me off-guard once or twice but I've never had a reaction that strong.

" Eternal Darkness when you look into the bath. most people won't know what i'm talking about but to those who do will totally agree. never been so scared of anything in my life "

I have a few: 
Fatal Frame- Holy crap was this game unnerving. I was moving the character around so slow, as to avoid being caught off guard, but it always happened anyways. Also, the Doll Room was KSJDBFBSEG 
RE4- The guy jumping out of the fridge scared the crap out of me. I immediately jumped up, and turned all of the lights on in my house xD 
Fallout 3- When I first encountered those giant red ants, I tried to get closer to one, so I could have a better shot. When I get right in front of it (my speakers were turned way up), he blew fire in my face, and I screamed like a girl and jumped out of my chair. It didn't help that my brother got to witness this, and kept laughing while my heart was pounding.

Thief 3, when you go into the Insane Asylum/ Orphanage, after that point that game just to a turn for the wtf this is creepy! (Probably the scariest game I've ever played too). I stopped playing that game for a month after seeing my first enemy on that level.

Ski Free it was called. I still have it on this PC.
 

I had some when I wasn't paying attention in other games and something attacks me from the back. The most recent one though would have to be these organ monster that come from the walls in Dead space.

The ending of F.E.A.R. 2, when: 
 

" The ending of F.E.A.R. 2, when: 
 

SPOILER WARNING: Click here to reveal hidden content.

Alma slops her nasty ass decayed pussy all on your dick, rapes you, and gets pregnant from it

"

" @jakob187 said:

" The ending of F.E.A.R. 2, when: 
 

SPOILER WARNING: Click here to reveal hidden content.

Alma slops her nasty ass decayed pussy all on your dick, rapes you, and gets pregnant from it

"

You're kidding, right? Reminds me of a certain movie series (which I can't name at the moment), with an Alien woman who tries to get with any man so she can get pregnant with alien babies. "

" @Karmum said:

" @jakob187 said:

" The ending of F.E.A.R. 2, when: 
 

SPOILER WARNING: Click here to reveal hidden content.

Alma slops her nasty ass decayed pussy all on your dick, rapes you, and gets pregnant from it

"

You're kidding, right? Reminds me of a certain movie series (which I can't name at the moment), with an Alien woman who tries to get with any man so she can get pregnant with alien babies. "

Species.  Those sucked, though...well...aside from when you're hitting puberty and see the first one in the theatres and yell "WHAT THE FUCK IS HAPPENING WITH MY PENIS?" when Natasha Henstridge is banging that one dood.  I mean, just as a joke, but it's great the kinds of reactions you can get out of making people think that you're popping a boner and don't know it...especially when you're only 13 years old.  LAWL  Aside from that...yeah...not even NEARLY the same. "

While first playing Dead Space and I went into the bathroom, the lights shut off and I almost shit my pants but soon it was all about jump scares and it got old quickly.

FEAR had a few good scares in the three levels I played of it. Falling into a puddle of blood and being attacked by a skeleton stands out.

The second I finished installing Modern Warfare 2.

Resident Evil One.  The first time you walk through the golden hallway with the arrow head and one of the zombies gets up and starts sprinting at you as the terrifying crimson head.  Check Mate.  And or anything that involved fighting Lisa, particularity in the RE make which was very well done. 

" Doom 3, that bathroom mirror thing really caught me off guard. "

RE2 when Nemesis (I think it was Nemesis) would randomly bust through walls and chase you while you were casually exploring. That got my heart racing.
 
Similarly, in HL: Episode Two when in the Ant-Lion caves and that guardian chases you around.