Your longest gaming streak?

back when skyrim came out i played at least 8-9hours a day during the weekends

I was dedicated to earning 100k XP in Tribes Ascend during the last day of double XP weekend. 9 hours without moving.

I attended a 30 hour LAN last year and slept for about 2 hours throughout the event total.

48 hours of knight online

24/7 for many many weeks playing some mmos, if we won't count rare 2-3 hours of sleep :< (I am so ashamed of it right now.)
If that entry does not count, then straight 16 hours playing minecraft.

~14h
18.00 31th December 2011 - 05.00 1nd January 2012
Team Fortress 2 with my friends (little lan party - 3 PC's)

Back around '95 I beat Final Fantasy 6 on SNES in one sitting.

Probably around 10 hours of Zelda or FF7.

11 hours in NFS Most Wanted long time ago

5 minutes in COD Black Ops

24 Hours on both Bungie Day '09 and Bungie Day '10. Was most definitely worth it. My only breaks were mere seconds to run to the bathroom and back.

about 6 hours on team fortress 2

alone... 12 hours playing Fallout: New Vegas

with a friend 9 hours playing Musou Orochi (Warriors Orochi [PS2])

LAN party: 6 hours playing CS 1.6, 6 PCs, 4 Lts of beer

Back when me and my friends used to play cod on ps3 we would play for 12+ hours straight every couple days

ITT people who play MMOs and people who don't

Like 3-4 hours...

5+ hours of Rock Band 2 each Wednesday through Friday two summers ago.
So much fun.

Skyrim on 11/11/2011 at 2pm until Wed about 5pm. So 120+. Give or take a few hours and I did not beat it, honestly IDK WTF I was doing other than having fun doing nothing and it worked right out the box for me, I didn't have problems like some people, the first patch broke the game for me.

Diablo 3 5/15/2011 at 4am until Sun about 10pm. I am at 200+ but at least 120hrs those days if not more. And I beat it speed running (didn't know WTF was happening but they were moving fast) with a group I joined like that Wed or Thur can't remember. Might have been sooner.

Bathroom breaks and cooking food at random periods so I can guess for sure the first day on both those games I did 24hrs easy if not more but memory is a bitch when you are me.

12 hours on Portal 2. I was the first time I didn't sleep at night and my secondary leaving school exam was so close... o.O

I sat down and played Infamous 2 straight through to the end. 15hr sitting.
Fantastic.

16 Hours of Tf2

20hrs Sleeping Dogs :D

48 hours on Tales of Symphonia with friends I think.

4hrs playing uncharted multi.......idk how i did it without raging!

Diablo 3 midnight release party.

A friend was having a lan party so I went and I played D3 for close to 40 hours without logging out or going to sleep. Everyone else fell asleep for a few hours but I wanted to get that head start.

Before the release we went to his house and pre-installed the game so we would only need to enter our keys after launch. Then we went to the grocery store and I bought 8 of the big twist top Rockstars, only one remained after my D3 binge.