Which is the game you've played more hours ?

heh. 190 hours in euro truck simulator 2..
Looks like I havent been playing at all when comparing to others

1st: Idlemaster-ASF aka card farming minigame
2nd: Europa Universalis genre, no clue the time on 2+3, was pre-steam times, 4 is 3k hours on steam. I not played that much with 2+3, so perhaps a good 3.5k h.
3th: Everquest as the very first very popular MMORPG, it was a must to play for those who had PC and acceptable internet at that time + liked RPGs. Knowing how MMOs weren't the mainstream, neither internet was common, so the 1m+ player base around 99-2000 was decent I believe, and the game still exists!
4th: World of Warcraft, which is an Everquest clone (i like to use this term as many MMO called Wowclone), even blizzard acknowledged they were very "influenced" by Everquest. WoW became very successful not just because of the cartoony graphics or because it became "easy", but also because it was the "NEW" boy when the internet became more widely common.
5th: SWTOR, the best storytelling single-player MMO on Earth. Huttball was fun, that should be a stand-alone PVP game.
6th+ no clue, no more MMO and other games I played more than what it was required to finish the story or get all achievements.

By far, Digimon Masters Online, with +1000h xD

Sid Meier's Civilization 5, by far!
I like the 6th game, but I haven't put in nearly as much playtime.

Super Cloudbuilt, 999h

Crusader Kings II - 2700h

World Of Warcraft - Should be somewhere around 5k hours

team fortress 2 496h

Pokemon Y. I guess it was around 700 hours.

Playing CS:GO and PUBG a while ago and such games would have produced lots of steam wallet.
Oh, L4D2 3.7kh. But I think I spent more time on other games outside steam.

DOTA 2 1207 Hours. I am sure Dota 1 was lot more than that.

I am no longer playing it tho. It is literally torture.

Path of Exile, 450-ish hours, I think

Elder Scrolls Online, with 1108 hours. I'd have more, but I'm pretty busy and don't have anything like the gaming time I'd like, these days.

Probably Borderlands 2 ~ 797 hs

Paladins - 1418 hours

On Steam: Mabinogi (at nearly 3k hours, mostly AFK)
Non-steam: Diablo 2 (guesstimate 15k+ hours)

Path of Exile with 500+ hours.

Arkham City is a distant second, having taken me slightly over 100 hours to 100%. So. Many. Challenge. Levels...

Oxygen Not Included, 210 hours.

I have almost 4000 hours of CSGO... im not proud of it, but im not a shamed either

Town of salem, i got like 666 hours in, i dont know how i played so much. Also in league i got like 2000, but stopped playing 3 years ago

Steam says CS-GO APB Reloaded and Dota 2 but there is a shit ton of idle time there.. Guess PUBG with 1,274 hrs is closest to the real time spent.

Gems of War - 1142 hours

Football Manager 2019 - 1460 hours and counting

i miss xfire and raptr. they had me down as over 40k hours in maplestory and over 25k hours in world of warcraft.

but for steam games, i have 2,600 hours in CSGO, all played time, never afked with game running before unless waiting for a queue to pop for a match lol