What is your most played game on steam?

My most played game is the game I didn't play almost at all, cause I AFK'ed for loot - Digimon Masters Online. Then I stopped. The game has a virus called nProtect GameGuard. I don't know if this is still the case, but I won't even go back to the game that used to make my PC going crazy, crashing Steam and Battle.net clients and other programs, and also making CPU goes over 80%.

Second one is Counter-Strike Source. The last CS that was actually good. The best CS ever, that I really played. Only 877 hours.
Then we got Team Forrtess 2 with 678 hours. Played it a lot too.
Dark Souls with 384.
Dota 2 that was played by my sister... for some reason she played on my account when it was invite beta, even though I had a key I could have (and did) give her later. They she played on her account.
184 hours in Borderlands: TPS. Played it like 10 times in a row with friend. We passed NG few times with different characters.
Borderlands 2 with 112 hours.

I would count only games that I played. So DMO is not one of it, neither Dota 2.

Some would say it's not much. But I don't play only one game. I play different games. I stopped playing CSS cause whenm I got good laptop, the server I was playing on has become extinct because of CS:GO, one of the worst game ever...

Team Fortress 2 - 977 hours

Terraria with 693 hours. A majority of that is co-op with friends. :)

bump, Football Manager 2017 - 1,142 hrs, i plan to play it more

GTA V - 2309 h and counting - I really love modern openworlds

The Witcher® 3: Wild Hunt 517 hours

World of Warcraft (Vanilla), 5k+ hours, way too much :SSSS

Rocket League - 637 hours

Stardew Valley at 379, but gf and kids play that too, so doesn't really count.
After that, Slay the Spire at 196 (not enough) hours.

CKII - 1062 Hours
What can I say, I love killing Muslims and pagans.

Marvel Heroes Omega - 7630 hours. Until House of Mouse decided they didn't want a serial harasser as the face/CEO the game.

Garry's mod , 164 hrs but i'm not playing it recently

Top 3, cuz I can't let y'all think I'm too pathetic with what is my most-played game:

1. Fallout 4 (554 hours)
2. Borderlands 2 (523 hours)
3. Fallout: New Vegas (474 hours)

Marvel Puzzle Quest = 3966 hours

I'm in an alliance, so yeah, I play regularly (but usually while I'm catching up on something on my DVR).

Brawlhalla, 1339h