The game played the most

[Mattisamo]

With 290 hours, it's still beaten by DotA2 with 429 hours.

[Gryphos]

237 GoI hours over here, while my most played is Civ V, at 618 hours

[Papa Paradox]

GOIO at 383, to think I used to be clocking in as much time as Zill

[Piemanlives]

Garry's Mod at around 120 or so hours, GoIO clocks at around 90.

[Sgt. Spoon]

...I may have logged equivalent on Mount and Blade (the first one), but I bought that strait from the developers and don't have it logging through steam.

Same thing here. I'm not sure of how much time I've really spent on Mount and Blade, but it's been a lot, and dammit all those hours have been worth it.


Other than that.... I've wasted a hell of a lotta time leveling my gnome warlock through the years 

[Eukari]

Other than that.... I've wasted a hell of a lotta time leveling my gnome warlock through the years 

Oh man, I'm almost scared to try and tally up all of the /played time on WoW I have...though, I know it's far less than many of my friends.

[Keon]

#neverplayedWOW

I feel like WOW might be fun, but subscriptions and stuff... plus WOW seems past it's prime now.

[Surette]

At 447 hours, yes, Guns of Icarus Online is my most played Steam game. However, I have over 4,000 hours logged on RuneScape. Not a Steam game though.

[Captain Phil]

Tf2 at 856 hours, but GoI is catting up at 790 hours.

[Letus]

Most often yes...
but currently TF2 is at 1,078 hours
GoIO is at 452...
Skyrim falls third at 272...

If you count the last two weeks however...GoIO definitely won with 9.8 hours....
...
as there is no time stat for any other game.

[Rainer Zu Fall]

537 hours. Yes.

[Skrimskraw]

I should have around 2000 hours of neverwinter  nights played, but it is an old and non steam game, so I have no proof. I just know I played it for around 3 years.