What Steam Game Have You Spent The Most Hours Playing?

Left 4 Dead 2 - 752 hrs

GARRYS MOD BY FAR I GOT 2200 hours and i barly play anymore

Nearly 200 hours on Red Faction Guerrilla. Would be beaten by a large margin if I had purchased Super Street Fighter 4 on steam, which I currently have around 850 hours on.

Company of heroes...around 60 hours.

TF2 with almost 1500 hours. After that Binding of Isaac, almost 200.

702.0 Hours on HLDM2 471.3 Hours on TF2 126.2 Hours on Forsaken World 119.0 Hours on GMOD 108.9 Hours on L4D2 366 Hours on Sims 3

Team Fortress 2!

Call of Duty MW2 486 hours c:

Team Fortress 2 -> 888h

BF: Bad company 2 -> 626h

Battlefield 3 -> 337h

I was curious if anyone hit 5 figures so I looked it up... I found one guy with 31,304 hours in CS. HOW IS THAT EVEN POSSIBLE?

Payday: The Heist at around 300 hours.
Skyrim at just (just made it to) 200 hours

437 on Dungeon Defendenders (alot of that was afk)
not afk: 104 Dark Souls, 94 Civ 5, 55 terraria, 40 on magicka and saints row: the third

http://www.lambentstew.com/webblog/miniproject/steamanalysis/steam_time/Worthun

TF2 at 1080 hours
L4D2 at 1011 hours

CS 1.6, around 1000 if you just count steam hours.

CoD WaW, 131hrs. All dem custom zombies. Followed by Chivalry at 120hrs.

TF2

Killing Floor. Over 200 hours.

M&B: Warband - 202 hours. Not much compared to the hundreds of people that have logged well over 500 hours, but it's still an accomplishment and i'd gladly play more if I could find a decent-enough mod for the campaign.

Also, boo to all the idlers. You guys suck. I:<

TF2 and Company of Heroes 170 hours

spiral knights 350 hours playin over 4 years

1583 on CS 1.6 on this account since 2008. I wish I could know how many hours total from my old stolen account + pre steam. It would be outrageous.

borderlands 2 - 79 hours
For ps3 it has to be Metal Gear Online - 430 hours

borderlands 2 - 79 hours
For ps3 it has to be Metal Gear Online - 430 hours

Garrys Mod 213.6 Hours

331 Hours on Counter Strike: source.
Man things were easier at 15.