Which Steam game have you got the most play time on?

Counter-Strike with 811 hours.

supreme commander 2 like 500 hrs

Sid Meier's Civilization IV: Beyond the Sword 102,9 h although it should be Counter Strike Source, but all of css playtime are before steam count the hours.

This is my top 3:

• Team Fortress 2 - 178 h
• Battlefield: Bad Company 2 - 122 h
• Unreal Tournament 3: Black Edition - 75 h

TF2, too many hours for my own good

TF2, around 1500 hours soon

i have 2 accounts, on this account CSS 189 hours and on other account cs 1.6 594 hours.

• Frozen Synapse: 15.4 Hours
• Second is either World Of Good ~10 Hrs (Almost all played offline, rough estimate)
• Or Cthulu Saves the World ~10 (Steam randomly decided it didn't feel like counting playtime on it anymore, pretty accurate estimate)

If you're counting all Steam games period then Fallout 1 at ~300Hrs or so at a wild guess. (Owned retail from launch so playtime is little more then a wild guess as I've played through it a number of times over the years).

Counter-Strike - 305 hours

tf2 571 hrs

Mhm, way before this hour counting system... I'd say it's Counter-Strike with way beyond 2k hours. I left Counter-Strike some years ago though. Now it's TF2 with close to 200 hours.

tf2 877 (idle) hrs

Unless you count xfire, then its Warcraft III with 1,087 hours

I hope to have no less than 300 hours in Oblivion before Skyrim.

Tf2 @ 2068 hours

Eve online with like 400~ hours I think.

I've played a ton more games than that though for much longer. I have a character in world of warcraft with over 365 days /played [just 1 char] and I have a bunch of other toons.

I played Conquer Online for like 4 years, so i'd say I have a ton of hours in that [probably way over 5k] and Warcraft 3 [And all of the time spent in that was due to mods. Never once played ladder.]

765 hours on TF2, did not idle even once

Rift is second with 400

I guess 112 in TF2 is the most

Dawn of War 2

Counter Strike: Source - 1200 hrs.

Over 2000 hrs in L4D series! XD

Left 4 Dead - 1142.9 hrs
Left 4 Dead 2 - 883.5 hrs

Counter-Strike Source 1289 hours

The Store.

1684 hours in css. On and off.

TF2, just hit 100 hours

552 in tf2 :)