Which is the game you've played more hours ?

EVE Online 10,546 hrs on record on Steam and more than twice that before I started playing on Steam.

And those talking decade or more ago I played/raided dual accounts in Everquest every night and weekend min 6 hrs a day. for a decade. Then followed by Playing World of Warcraft from beta for five years and occasionally now on and off for holiday events.

Sid Meier's Civilization V 1,105 hrs on record on Steam (3rd most played game on Steam after STO)

OK I will admit it. I am a gameaholic.

counter-strike 8866 hours (actually played ~4k)

Shattered Kingdoms.

Haven't played it in years, but back in 1999-2001 that game took more of my time than any to date. I remember one of my characters having over 1400 hours or something like that.

EQ2, and Battlefield 1942 would be my next two.

Counter-Strike: Global Offensive - 1,133 hrs
Team Fortress 2 - 427
Garry's Mod - 137
The Elder Scrolls V: Skyrim - 114 hrs

Dota 2, 4441 hours -
Garry's Mod, 2536 hours

dota 2 = 3000hours+
yeah I have no life

Rome Total War-114 hours