Game Hours Played :D

Fallout New vegas- 220 hours

Deus ex HR 40 hours

TF2 26 hours

1) Killing Floor - 217 hours

2) PAYDAY: The Heist - 57 hours

3) Left 4 Dead 2 - 35 hours

Alien Swarm 36.7

Terraria 32.1

Fallout New Vegas 31.6

Team Fortress 2 2428.7
Day of Defeat: Source 706.1
Counter-Strike: Source 148.7
Left 4 Dead 2 66.9
Portal 40.1
Overlord 21.7
Half-Life 2 18.8

NO I can't count to three

CS 1.6 2,354.0 hrs
CS:S 269.8 hrs
Garry's mod 75.5 hrs

Test Drive Unlimited 2 - 1,463.5hrs (about 900hrs from non-steam version is not included)
Just Cause 2 - 243.5hrs (I was trying to get close to 100%, but not possible)
Dirt 3 - 213.8hrs (way too much grinding to help people get level 35 achievement)

Magicka - 69 hours (due to some weird glitch it put it from 12 hours to 69 about a year ago)
Plants vs Zombies - 54 hours
Team Fortress 2 - 49 hours
Terraria 46 hours (since magicka doesn't really count I'm putting 4)

lots of time in Football Manager 2011, more than 700 hours. too lazy to check

DC Universe Online - 422.7 hrs on record

Team Fortress 2 - 74.5 hrs on record

Assassin's Creed Brotherhood - 63.3 hrs on record

• Alliance of Valiant Arms - 1,088.8 hrs
• Counter-Strike: Global Offensive - 85.1 hrs
• Torchlight II - 71.4 hrs (still didn't finished the game, 3 chars created, one on each ACT because i had 2 friends who bought the game and i started with them a new char).

That's all.

MasterBathing game time: off the charts

Team Fortress 2: 610.2 hrs

Left 4 Dead 2: 124.6 hrs

Killing Floor: 91.3 hrs

Might and Magic: Clash of Heroes: 57.2 hrs

most of my play time wasn't recorded because i was in offline mode...

MW3: 170 hrs
MW2: 120 hrs
BO: 64 hrs
Terraria: 33 hrs
Mageic: 30 hrs

mw3 760 hours

Dota 2 - 340.9 hrs

Alien Swarm - 191.7 hrs

Dungeon Defenders - 35.7 hrs

going through my backlog to actually win the games i own (that got campaing), atm going through Cave Story+ got 22.8 hrs on first play through on Hard.

Since it's steam only:

1) Binding of Isaac 114 Hrs (couldn't play anything better for a while, good game thought)

2) Borderlands 2 96 Hrs

3) CS 1.6 83 Hrs

1) Left 4 Dead 2 = 345.4 hours, get all achievements is hard!

2) Worms Reloaded = 206.5 hours, I like this game and need a few more achievements

3) Frozen Synapse = 184.2 hours, good game, I can't believe I played it so much

Battlefield Bad Company 2 - 201 hours
Call of Duty Black Ops 2 - 110 Hours
F.E.A.R. 3 - 14.5 Hours
=DDDDD

Assassin's Creed Brotherhood - 601 hours

Assassin's Creed Revelations - 355 hours

Company of Heroes Tales of Valor - 282 hours

Counter-Strike - 2,492.7 hours (without non-steam)

Left 4 Dead 2 - 113.8 hours

Torchlight - 58.3 hours

dota 2 -> 810+h - no idling

Lol, my top 12:
Universe Sandbox 486.7 hrs on record
Bejeweled 3 262.2 hrs on record
4 Elements 231.0 hrs on record
Faerie Solitaire 184.6 hrs on record
Team Fortress 2 173.7 hrs on record
Puzzler World 2 158.9 hrs on record
Counter-Strike: Source 135.5 hrs on record
Critical Mass 132.5 hrs on record
Plants vs. Zombies: Game of the Year 126.2 hrs on record
Terraria 93.5 hrs on record
Batman: Arkham City™ 82.0 hrs on record
Poker Night at the Inventory 61.0 hrs on record

Apparently I'm more of a "casual gamer" than I thought, though the high times in some of those is due to having them open in the background while I do other things.

Team Fortress 2 > 903~ hours. (No idling)

Counter-Strike Source > 109~ hours.