Your top 10 most played games on Steam?

1. Warframe - 252 hrs
2. Team Fortress 2 - 178 hrs
3. Dota 2 - 142 hrs
4. Terraria - 102 hrs
5. Tom Clancy's Ghost Recon Phantoms EU - 93 hrs
6. Sid Meiers's Civilisation V - 64 hrs
7. Garry's Mod - 59 hrs
8. Planetary Annihilation - 59 hrs
9. Borderlands 2 - 43 hrs
10. Robocraft 43 hrs

I'm quite surprised how low some of my game time hours are.

1. Dota 2 - 1,867.4h
2. Dynasty Warrior 8 XL - 194.6h
3. Terraria - 111.2h
4. Torchlight 2 - 97.3h
5. Euro Truck Sim 2 - 38.8h
6. CSGO - 35.7h
7. Payday : TH - 32.9h
8. Rome : Total War - 29.0h
9. Devil May Cry 4 - 21.8h
10. The Banner Saga - 17.5h

DOTA 2 - 883h
Civilization V - 141h
Killing Floor - 100h
Warlock Master of the Arcane - 87h
Europa Universalis IV - 85h
Team Fortress 2 - 62h
Fallout: New Vegas - 53h
Company of Heroes 2 - 46h
Company of Heroes 46h
Avernum: Escape from the Pit - 44h

So Many DotA Players!

1. Gems of War - 221 hrs
2. Burnout Paradise: The Ultimate Box - 103 hrs
3. FATE - 52 hrs
4. Valkyria Chronicles™ - 42 hrs
5. Batman: Arkham Asylum GOTY Edition - 41 hrs
6. Orcs Must Die! 2 - 38 hrs
7. Dungeon of the Endless - 33 hrs
8. BattleBlock Theater - 25 hrs
9. Bastion - 23 hrs
10. Beat Hazard - 22 hrs

I look at this list and think, "I need to finish those achievements..."

Well, I don't play one game for a long time but my good real life friend has nearly 3000 hours in DotA 2. He is totally insane!

Dead Island: Epidemic - 1,524 hrs on record
Killing Floor - 475 hrs on record
Team Fortress 2 - 344 hrs on record
Sid Meier's Civilization V - 342 hrs on record
Left 4 Dead 2 - 207 hrs on record
Jagged Alliance 2: Gold Pack - 176 hrs on record
Fallout: New Vegas - 175 hrs on record
Dungeons of Dredmor - 135 hrs on record
Borderlands 2 - 130 hrs on record
Terraria - 111 hrs on record

1. Payday 2 - 550
2. GTAV - 182
3. Path of Exile - 158
4. Bloodline Champions - 58
5. CS:GO - 49
6. Portal 2 - 37
7. DotA 2 - 28
8. TF2 - 25
9. Rogue Legacy - 22
10. Fable III - 19

My hours pretty low compared to most. Shame Steam can't track non-steam games, could probably add another 1k hours from SC2, 500 from Diablo 3 and 2k hours from WoW back during my Blizz days.

1. Team Fortress 2 - 68 Hours
2. Counter-Strike: Global Offensive - 42 Hours
3. Hotline Miami 2: Wrong Number - 33 Hours
4. Portal 2 - 25 Hours
5. Sleeping Dogs - 24 Hours
6. Hotline Miami - 23 Hours
7. Broforce - 18.4 Hours
8. Mirror's Edge - 18.4 Hours
9. Super Hexagon - 17.5 Hours
10. Saints Row IV - 17.4 Hours

1. Counter-Strike: Global Offensive - 982h,
2. TF2 - 968h.

And now normal games (with real time):

3. Batman: Arkham City GOTY - 70h,
4. Deus Ex: Human Revolution - 51h (original version not buggy DC version),
5. Saints Row: The Third - 43h,
6. Batman: Arkham Origins - 37h,
7. Sanctum - 27h,
8. The Binding of Isaac -27h,
9. BioShock - 23h (but i don't like this game much),
10. Stronghold HD - 21h,
11. TrackMania United - 21h.

1. Warframe - 487hrs
2. The Binding of Isaac - 290hrs
3. Spelunky - 220hrs
4. The Binding of Isaac: Rebirth - 195hrs
5. The Elder Scrolls V: Skyrim - 152hrs
6. Terraria - 136hrs
7. Fallout 3 - 118hrs
8. The Elder Scrolls III: Morrowind - 113hrs
9. The Elder Scrolls IV: Oblivion - 98hrs
10. Starbound - 91hrs

Dota 2 927 hrs
Princess Evangile 21hrs
Borderlands 2 15.6hrs
Hyperdimension Neptunia Re;Birth1 7.2 hrs
Command and Conquer: Red Alert 3 - Uprising 6.4hrs .

And it goes down the train from there,

The Secret World 6,919 hrs on record
Zombie Panic Source 2,547 hrs on record
Killing Floor 1,587 hrs on record
Counter-Strike: Global Offensive 1,494 hrs on record
Team Fortress 2 1,271 hrs on record
Counter-Strike 894 hrs on record
Insurgency 359 hrs on record
Counter-Strike: Source 337 hrs on record
Primal Carnage: Extinction 333 hrs on record
Counter-Strike: Condition Zero 259 hrs on record

1. Left 4 Dead 2 - 226.3h
2. Counter-Strike: Global Offensive - 160.5h
3. Ace of Spades - 36.2h
4. Garry'S Mod - 32.5h
5. Robocraft - 31.7h
6. Geometry Dash - 24.7h
7. South Park: The Stick of Truth - 18.0h
8. Super House of Dead Ninjas - 12.7h
9. Portal 2 - 12.6h
10. Team Fortress 2 - 11.1h
11. Sonic & All-Stars Racing Transformed - 10.2h
12. AdVenture Capitalist - 7.4h
13. Call of Duty: Advanced Warfare Multiplayer - 6.2h
14. Goat Simulator - 5.3h

then all the next incoming games are most of the time idled xD

PAYDAY 2 321.6h
Space Engineers 73.9h
Left 4 Dead 2 49.9h
Team Fortress 2 45.7h
Half-Life 27.1h
BioShock Infinite 27.0h
Counter-Strike: Global Offensive 24.9h
Dead Island 22.0h
Overlord 18.4h
Orcs Must Die! 2 16.9h

Dota 2 - 5,055 hrs on record
Killing Floor - 117 hrs on record
The Witcher: Enhanced Edition - 52 hrs on record
Left 4 Dead 2 - 49 hrs on record
Counter-Strike: Global Offensive - 49 hrs on record
Deadly Premonition: The Director's Cut - 48 hrs on record
Batman: Arkham City™ - 42 hrs on record
The Walking Dead - 41 hrs on record
Saints Row: The Third - 41 hrs on record
Assassin's Creed Revelations - 35 hrs on record

I was gonna make a snarky remark about how you can check that yourself by simply looking at my Steam profile but since you have 1 more perfect game than me, I'll go along with it out of respect for a fellow achievement hunter. :P

1. Dota 2 - 986 hours
2. Borderlands 2 - 649 hours
3. Rusty Hearts - 469 hours
4. Team Fortress 2 - 315 hours
5. FTL: Faster Than Light - 297 hours
6. Awesomenauts - 277 hours
7. Sid Meier's Civilization V - 271 hours
8. XCOM: Enemy Unknown - 244 hours
9. Recettear: An Item Shop's Tale - 204 hours
10. Terraria and Skullgirls - 203 hours

Team Fortress 2 | 505 hours
Garry's Mod | 395 hours
ARMA 2: Operation Arrowhead | 161 hours
Unturned | 100 hours
Counter-Strike: Global Offensive | 98 hours
Realm of the Mad God | 40 hours
PlanetSide 2 | 35 hours
Killing Floor | 18 hours
Terraria | 18 hours
Borderlands 2 | 18 hours

All together - 1388 hours

Dungeons of Dredmor 276 hrs on record + Dungeons of Dredmor - Beta 72 hrs on record
Team Fortress 2
Spectromancer
Evolve
Nuclear Throne
Killing Floor
Borderlands 2
Terraria
Team Fortress Classic
10 L.A. Noire
Marvel Puzzle Quest
The Binding of Isaac: Rebirth
Altitude
Strife
Transistor

CS:GO - 349 hrs
Team Fortress 2 - 273 hrs
Skyrim - 221 hrs
Dark Souls - 208 hrs
Garry's Mod - 168 hrs
Source Film Maker - 149 hrs (not sure if it counts as a game)
Warframe - 141 hrs
Payday 2 - 127 hrs
Sid Meier's Civ. 5 - 94 hrs
Deus Ex: Human Revolution DC - 86 hrs

I see many people with alot of time for drops only. Won't Valve ban for idling? =)

1. Dota 2 - 420 hrs
2. The Binding of Isaac - 129 hrs
3. Dark Souls 2 - 114 hrs
4. Dark Souls - 75 hrs
5. Divinity: Original Sin - 50 hrs
6. Sid Meier's Civilization V - 49 hrs
7. CS: GO - 44 hrs
8. Borderlands 2 - 41 hrs
9. The Witcher 2 - 35 hrs
10. Dungeons of Dredmor - 33 hrs

Darksiders : 27 hrs
Black Mirror : 21 hrs
A New Beginning - Final Cut : 20 hrs
Faerie Solitaire : 16.4 hrs
Runaway: A Twist of Fate : 10.9 hrs
MURDERED: SOUL SUSPECT™ : 10.5 hrs
Pro Evolution Soccer 2015 : 8.7 hrs
Nikopol: Secrets of the Immortals : 7.7 hrs
Far Cry® 3 Blood Dragon : 6.7 hrs
The Vanishing of Ethan Carter : 6.7 hrs

The Elder Scrolls V: Skyrim - 227 hrs
XCOM: Enemy Unknown - 151 hrs
Sid Meier's Civilization V - 118 hrs
Grand Theft Auto: San Andreas - 107 hrs
FTL: Faster Than Light - 101 hrs
Deus Ex: Game of the Year Edition - 73 hrs
Saints Row: The Third - 67 hrs
Super Meat Boy - 55 hrs
Rogue Legacy - 55 hrs
Archon:Classic - 52 hrs

This reflects actual playtime. My actual steam stats are kind of ruined because I had a game crash on me in such a way that Steam didn't think it was closed and it gave me three days of extra playtime before I noticed.

Dota 2 - 858 hrs
Counter-Strike - 186 hrs
Team Fortress 2 - 183 hrs
Assassin's Creed Brotherhood - 48 hrs
The Witcher: Enhanced Edition - 44 hrs
Assassin's Creed Revelations - 33 hrs
Assassin's Creed II - 31 hrs
Counter-Strike: Condition Zero Deleted Scenes - 23 hrs
Dishonored - 23 hrs
Metro 2033 - 22 hrs