What is your most played game on steam?

Mine are:
DOTA 2 (which I used to play a lot with friends, but we got bored with it, so we play other games now): 927h
Europa Universalis 4: 247h
Secret World: Legends: 187h
Civilization V: 163h

i think terraria with 100+h.
the game I played more is probably diablo2, but who knows how much...

Technically cs:go, but it's mostly idling. 1083 hrs
Dota 2, 756 hrs
Borderlands 2, 609 hrs on steam, over 100 hrs on a pirated copy

Mount & Blade: Warband with 85 hours, I really enjoyed the single player for a while. I've far too many games to play to spend hundreds of hours with any one game.

MMO: Secret World Legends - 2097 hours
Single player: Skyrim SE - 1465 hours

2,000 hours neat for Civilization V :)

crusaders of the lost idols at 5566 hours
fallout 4 at 1284 hours

Steam has screwed up the stats in their API somewhere along the way. It tells me that I've only put in 14.6 hours in Counter-Strike.

I have well over 2500+ hours in Counter-Strike.

Binding of Isaac: Rebirth only lists 221 hours. Realistically it's over 500.
Payday 2 only lists 134 hours. Realistically it's well over 700.

Not sure where and when the playtime went all screwy though. I've definitely wasted enjoyed half of my life playing these games.

FFXIV - 517 hours (probably that again on the console/standalone versions)
CSGO - 184 hours
F1 2013 - 167 hours
Assetto Corsa - 131 hours

Most played game by far is FFXI though. Steam has only tracked 12 hours due to the screwy nature of the games launcher, but I'm at around 9000 hours (and counting) last time I checked.

1204 hours in Battleborn (weird I know)
Second place - Paladins with 1134 hours.

It's taking forever to load, but I believe it's still Borderlands 2 with 934 hours.

I think it's the witcher 3.

TF2, CS GO and Borderlands

The Binding of Isaac: Rebirth | 596 Hours.

CS:GO 873 hrs

Metal Gear Solid V: The Phantom Pain (1307hrs)

PLAYERUNKNOWN'S BATTLEGROUNDS

rough, I thought for sure it was warband. I wasn't even gonna check.

Top 3
Terraria - 534 hours
Kerbal Space Program - 473 hours
Fallout: New Vegas - 223 hours

Counter Strike Nexon: Zombie - 5067 hours

It's a pretty modest total, but I did put 130 hours into the full version of the first Borderlands. I completed every mission except one (you can probably guess which one if you know that game), and then replayed it up to the Rakk Hive battle.

I really didn't like the Rakk Hive battle.

Clicker Heroes ... -_- 411 hrs
Don't judge me ... haha it was in a time I just wanted more achievements and its a idle game so I didn't reeeeeally waste that much time on it and just left it on over night to play itself XD.

My second most played game is Fallout 4:) 298 hrs and those hours I all played myself :)

Dont Starve Together. 813hrs, although not all is playtime but thats how Steam clocks it. 2nd is Civilization III but in truth, this should be 1st as this is the go to game when I have internet downtime which is the only game I know that does not require internet connection to play. I also like to chill in the game, just structuring the world to how I like it. :D

Games with over 250 hours listed on Steam

1. The Long Dark -- 910 hours
2. Skyrim -- 900 hours (plus 97 hours on Skyrim: Special Edition)
3. Euro Truck Simulator 2 -- 504 hours
4. Banished -- 298 hours
5. American Truck Simulator -- 290 hours

Fallout: New Vegas - 165 Hours

Dota 2 @ 4300 hours or so.