Your top 10 most played games on Steam?

Titan Quest Immortal Throne - 439h
Europa Universalis IV - 252h
Civilization V - 215h
Dark Souls Prepare to Die - 189h
Crusader Kinds II - 149h
Borderlands - 148h
Binding of Issac - 119h
Binding of Issac Rebirth - 116h
Dungeon Defenders - 114h
Skyrim - 96h

1 Counter-Strike 675 h
2 Counter-Strike: Global Offensive 380 h
3 Counter-Strike: Source 373 h
4 PAYDAY 2 295 h registradas
5 Sid Meier's Civilization V 253 h
6 Hearts of Iron III 178 h
7 Team Fortress 2 157 h (idle /crafting power)
8 XCOM: Enemy Unknown 114 h
9 Recettear: An Item Shop's Tale 103 h
10 L4D2 95 h

5extra:
victoria II
napoleon total war
civilization beyond earth
deus ex: HR

\o/ i think i have the most unique list in the thread :D

Ragnarok Online 2 73 hrs
Ragnarok 13.8 hrs
Audiosurf 13.7 hrs
Trine 2 13.7 hrs
Orcs Must Die! 2 13.4 hrs
Castle Crashers 13.3 hrs
Lara Croft and the Guardian of Light 9.7 hrs
Closure 8.7 hrs
TyranoBuilder Visual Novel Studio 8.3 hrs
Cherry Tree High Comedy Club 7.6 hrs

1. Call of Duty: Modern Warfare 2 - Multiplayer - 305h
2. Prison Architect - 148h
3. Grand Theft Auto V - 102.3h
4. Verdun - 92.8h
5. Cities: Skylines - 92.4h
6. Game Dev Tycoon - 67.1h
7. Far Cry® 3 - 60h
8. Starbound - 55.3h
9. Cities in Motion 2 - 43.9h
10. Test Drive Unlimited 2 - 38.5h

1. Terraria - 340 Hrs
2. Team Fortress 2 - 256 hrs
3. Final Fantasy XIII - 150 hrs
4. Ys Origin - 139 hrs
5. Skyrim - 133 hrs
6. Final Fantasy IV - 109 hrs
7. Final Fantasy VII - 104 hrs
8. Kingdoms of Amalur: Reckoning - 102 hrs
9. Final Fantasy III - 101 hrs
10. Final Fantasy VIII - 101 hrs

~Honorable Mentions

11. Saint's Row: The Third - 99 hrs
12. Dragon Ball Xenoverse - 89 hrs
13. Endless Space - 86 hrs
14. Final fantasy XIII-2 - 84 hrs
15. Shadowrun Returns - 81 hrs
16. Child of Light - 77 hrs
17. Saint's Row IV - 75 hrs
18. Counter-Strike: Global Offensive - 75 hrs
19. Injustice: Gods Among Us - 71 hrs
20. Ys: The Oath in Felghana - 66 hrs

1. Just Cause 2 - 298 hrs
2. The Elder Scrolls V: Skyrim - 151 hrs
3. Counter-Strike: Global Offensive - 114 hrs
4. Saints Row: The Third - 105 hrs
5. Sid Meier's Civilization V - 101 hrs
6. Burnout Paradise: The Ultimate Box - 100 hrs
7. The Sims 3 - 85 hrs (although it doesn't really count since that was my sister playing it for quite a while)
8. Sleeping Dogs - 75 hrs
9. Far Cry 3 - 71 hrs
10. Terraria - 63 hrs

And as a bonus:
Just Cause 2: Multiplayer Mod - 52 hrs

Team Fortress 2 - 1674 hrs
Killing Floor - 1559 hrs
Borderlands 2 - 299 hrs
The Last Remnant - 282 hrs
Far Cry 3 - 91 hrs
Killing Floor 2 - 87 hrs
Torchlight 2 - 83 hrs
Left 4 Dead 2 - 76 hrs
Deadly Premonition: The Director's Cut - 62 hrs
DayZ - 56 hrs

Rust
1,034 hrs on record

Counter-Strike: Global Offensive
978 hrs on record

Counter-Strike: Source
415 hrs on record

Mortal Kombat Komplete Edition
177 hrs on record

Space Engineers
127 hrs on record

Counter-Strike
100 hrs on record

Arma 2: Operation Arrowhead
63 hrs on record

Need for Speed: Hot Pursuit
43 hrs on record

Worms Revolution
26 hrs on record

Grand Theft Auto IV
16.8 hrs on record

call of duty: modern warfare 3 multiplayer - 546h
counter-strike: source - 300h
call of duty: mw 2 multiplayer - 299h
dungeon defenders - 219h
counter-strike: condition zero - 174h
counter-strike: global offensive - 83h
the binding of isaac - 78h
saints row the 3rd - 62h
fieldrunners - 57h
call of duty: black ops 2 multiplayer - 44h

1. War Thunder - 1,814 hrs on record
2. Dota 2 - 811 hrs on record
3. Sid Meier's Civilization III: Complete - 590 hrs on record
4. Team Fortress 2 - 514 hrs on record
5. Knights and Merchants - 151 hrs on record
6. Warhammer® 40,000™: Dawn of War® II - 138 hrs on record
7. Fallout: New Vegas - 123 hrs on record
8. XCOM: Enemy Unknown - 118 hrs on record
9. Warhammer® 40,000™: Dawn of War® II – Retribution™ - 116 hrs on record
10. Fallout 3 - Game of the Year Edition - 114 hrs on record

1. Team Fortress 2 = 1,572 hours

2. Counter-Strike = 1,327 hours

3. Counter-Strike: Global Offensive = 697 hours

4. The Elder Scrolls V: Skyrim = 235 hours

5. Left 4 Dead 2 = 228 hours

6. Sid Meier's Civilization V = 101 hours

7. Killing Floor = 94 hours

8. Spiral Knights = 88 hours

9. Saints Row: The Third = 85 hours

10. Dead Island = 48 hours

Dota 2 - 1,864 hr
FINAL FANTASY XIII-2 - 109 hrs
FINAL FANTASY XIII - 108 hrs
Rocksmith 2014 - 88 hrs
Team Fortress 2 - 80 hrs
Counter-Strike: Global Offensive - 68 hrs
Killing Floor - 52 hrs
Saints Row: The Third - 52 hrs
Valkyria Chronicles™ - 49 hrs
Saints Row IV - 32 hrs

Fcuk dota man.....

The Elder Scrolls V: Skyrim - 168 hrs
Don't Starve Together Beta - 49 hrs
Dead Island Riptide - 32 hrs
Two Worlds II - 26 hrs
Trine - 10,5 hrs
Chaos on Deponia - 8,6 hrs

1. Sid Meier's Civilization V - 246 hrs
2. Borderlands 2 - 106 hrs
3. Team Fortress 2
4. Terraria - 75 hrs
5. The Elder Scrolls V: Skyrim - 74.5 hrs
6. XCOM: Enemy Unknown - 65 hrs
7. Torchlight II - 62 hrs
8. The Incredible Adventures of Van Helsing - 53 hrs
9. RIFT™ - 46 hrs
10. Siralim - 46 hrs

Sometimes i play in my work using offline mode (no internet connection)... so most of those playtimes are a bit higher, specially Civ V and Skyrim :/

Left 4 Dead 2 - 353 hrs on record (taking all achievements requires time)
Frozen Synapse - 265 hrs on record (lots of waiting time)
Worms Reloaded - 211 hrs on record (it's been a lot of fun)
FTL: Faster Than Light - 188 hrs on record (can't believe it took so much time from me)
Spiral Knights - 175 hrs on record (I kinda regret this)
The Binding of Isaac: Rebirth - 151 hrs on record (without even noticing I have more hours here than in the first one)
The Binding of Isaac - 148 hrs on record (still hard mode to do)
Super Meat Boy - 99 hrs on record (well, there are a lot of levels)
Dark Souls: Prepare to Die Edition - 98 hrs on record (about 60 hours to understand this game)
Team Fortress 2 - 95 hrs on record (meh, mostly loading times)

Team Fortress 2 --- 54 hrs
Clicker Heroes --- 47 hrs
Knights of Pen and Paper +1 --- 41 hrs
Counter-Strike: Global Offensive --- 14 hrs
Far Cry® 3 --- 8,8 hrs
Left 4 Dead 2 --- 8,1 hrs
Happy Wars --- 4,9 hrs
Magicka ---- 2,2 hrs
PAYDAY 2 --- 2 hrs
Tropico 4 --- 2hrs

I'm very new to Steam still i have 52 paid games, but my playtime is very low at the moment due my recent entrance to steam and my Hearthstone addiction.

Team Fortress 2 - 3,405 hrs
Binding of Isaac Rebirth - 797 hrs
Borderlands 2 - 478 hrs
Battlefield Bad Company 2 - 431 hrs
Binding of Isaac - 431 hrs
Day of Defeat - 400 hrs
Modern Warfare 2 multi - 345 hrs
Borderlands - 237 hrs
Skyrim - 189 hrs
CSS - 155 hrs

SpeedRunners - 152 hrs on record
Counter-Strike: Source - 80 hrs on record
Secret of the Magic Crystal - 73 hrs on record
Tropico 4 - 66 hrs on record
Left 4 Dead - 65 hrs on record
Source Filmmaker - 59 hrs on record
Ku: Shroud of the Morrigan - 51 hrs on record
Team Fortress 2 - 43 hrs on record
Garry's Mod - 37 hrs on record
Sonic & All-Stars Racing Transformed - 36 hrs on record

The Elder Scrolls V: Skyrim: 396 hrs
Fallout New Vegas 333: hrs
Team Fortress 2: 296 hrs
Terraria: 167 hrs
The Elder Scrolls: Oblivion: 88 hrs
Mount & Blade: Warband: 82 hrs
Left 4 Dead 2: 81 hrs
Killing Floor: 64 hrs
Dungeons of Dredmor: 63 hrs
Baldur's Gate: Enhanced Edition: 54 hrs

11-20 screenshot included as well.
It's a weird list.

View attached image.

Tf2 - 1,282
Killing Floor- 326
Dota 2 - 210
CoD MW3 Multiplayer - 160 
Skyrim - 142
Civ 5 - 140
CS:GO - 140
Cod BO2 - 120
CoD MW3 (singleplayer/co-op)- 77
Tropico 4 - 77

https://steamdb.info/calculator/76561198058301544/
Yes,i played alot. Check by time section.
But the longest one:

1. TF2 1.5k hours.

So here it is:

1. Borderlands 2- 500 h (yeah...I know, fucking crazy)
2. Torchlight 2 - 120 h
3. Borderlands - 65 h
4. Sleeping Dogs - 64 h
5. Dishonored - 62 h
6. Deus Ex Human Revolution - 62 h
7. Hawken -45 h (got bored din the end)
8. Bioshock Infinite - 43 h
9. Orcs Must Die 2 - 41 h
10. Saints Row 4 - 38 h

Insane that I have more time in linear games like Bioshock Infinite and Dishonored than in a sand-box like Saints Row IV. It's because those games are so awesome I finished them multiple times each. I felt very little desire to continue playing Saints Row IV after completing it, especially seeing that I did all the side-quests before the final mission, much less start it again.

And yes, i do own the Bethesda RPGs (Skyrim, Fallout 3 and New Vegas). Didn't quite play them yet :-p.

One does not simply play games

1. Arma 2: Operation Arrowhead - 1,206 hrs (I run a DayZ Mod server, hence the amount of hours)
2. Terraria - 418 hrs
3. AdVenture Capitalist - 235 hrs
4. A.V.A - Alliance of Valiant Arms - 220 hrs
5. Hero Siege - 152 hrs
6. Killing Floor - 108 hrs
7. Garry's Mod - 88 hrs
8. Grand Theft Auto IV - 63 hrs
9. Saints Row: The Third - 51 hrs
10. Dead Island - 46 hrs

1. Counter-Strike: Global Offensive - 934 hrs on record
2. Left 4 Dead 2 - 638 hrs on record
3. Counter-Strike: Source - 481 hrs on record
4. Counter-Strike - 268 hrs on record
5. Team Fortress 2 - 226 hrs on record
6. Rome: Total War - 223 hrs on record
7. Insurgency - 120 hrs on record
8. Grand Theft Auto V - 79 hrs on record
9. Altitude - 75 hrs on record
10. Call of Duty: Modern Warfare 2 - Multiplayer - 67 hrs on record