The longest game you've beaten start-to-finish in one sitting.

[hittite]

Metroid 2: Return of Samus

Spoiler: this one

Spoiler: not this one

2 hours, 43 minutes.

 

[mirror's edgy]

HL2... after dinner to sunrise.

 

[CRAVE CASE 55]

Cod 4-Blackops in one sitting getting all the intel i n black ops mw and mw2 and the death cards in waw all from memory when my friend got a 360

 

[GiglameshSoulEater]

Gears of war 1 and 2, back to back in co-op on hard.
AWWWWW YEAH.

 

[MiracleOfSound]

Mirror's Edge... But I finished it TWICE in one sitting!

That's a good 4 hours then.

Just joking

It was kinda short though.

 

[JessHimself]

Castlevania: Symphony of the Night, took 13 hours for 200.6%.

 

[Wondermint13]

Brutal Legend. Finished it over night In about 9-10 hours while staying over at my Dads. I didnt unlock everything but y'know..

 

[BoogieManFL]

Hmmm.. In one sitting...

All of the Doom and Duke Nukem campaigns back to back in 3 player Co-op on max difficulty. Took quite a long time but I don't recall how much exactly.

 

[torzath]

I'm not good with playing for more than a couple of hours, so all I can say is Sly Cooper 1 and some Kirby games.

 

[TheAceTheOne]

I played Nethack to its ending in one sitting. If by "played to the end" you mean "Was killed by a troll while helpless".

 

[postzit]

halo reach on heroic bought it around 12 in the afternoon finished it around 10 later that day also half life 1 part on and part 2 started around 9 finished like 3 am the next day only for my xbox to freeze at the end

 

[TheEvilCheese]

The day Pokémon HG/SS came out, I got HG at 8am and played solid for almost a day, Time taken from beginning to Beating Red: 22:43.
Then I slept for an age.

When my friend first got MW2 (I'd never played it) I went over to his house.
long story short, completed the campaign between 3am and 8am.
Never want to touch that game again.

 

[Nalgas D. Lemur]

Probably Secret of Mana, co-op with three players. That was a good (and rather long) day.

 

[lacktheknack]

Mirror's Edge... But I finished it TWICE in one sitting!

That's a good 4 hours then.

Just joking

It was kinda short though.

It took five... but it was STILL longer than Portal.

 

[SilkySkyKitten]

Half Life: Blue Shift

It's only about 4 hours long, though, so it pales in comparison to the people who've played games like HL2, FFVII, or even MW2 in one sitting.

 

[Levi93]

I completed bioshock 1 in one sitting the moment I got it cause I was so excited for it.

 

[xqxm]

I Wanna Be The Guy, on Very Hard.

It took me about 2 or 3 hours.

 

[Lord Penney]

Destroy all humans, it was quite short though...

 

[The Unworthy Gentleman]

None so far. I may need to do one soon though, probably Mafia 2. It would be my third and would have to be on hard to be worth any credibility.

I hope you're doing this hardcore, just for that added difficulty.

 

[revolutionaification]

Wow, I feel like such a pansy. I've only done Portal on the day I started it, taking about 4 hours, and my first Mass Effect playthrough where I blundered through the main quests in a day and a bit because I was so wrapped up in the story and I didn't realise I was so close to the end.

But still, that's nothing compared to some of you guys.