I played about

1.) 95 hours on fable 3

2.) 20 hours on Risk faction

3.) 20 hours on civilization revolution

4.) 25 hours on gears of war 2

5.) 220 hours on pokemon heart gold

6.) probably 150 hours on other games combined

wow so many days i gamed lol

probably Uncharted 2, can't get enough of the MP!!!=)

200 hours on monster hunter tri

80 so far on fallout new vegas

and a bunch of 10s and 20s on other games lol/

90 hrs of Mass Effect 2

50-55hrs of Fable III

48-50hrs of Bad Company 2

35hrs of Black Ops

28 hrs of Castlevania Lords Of Shadow

F*** i have no life

I put about 12 days of gametime or 288 hrs into MW2 in 2010.  All told, I put about 18 days of gameplay into that game including spec ops and single-player.  I am not getting into Black Ops as much though and I have barely put 24 hrs into so far.

My game for 2011 is Rock Band 3.  I have already put close to 20hrs into the game and I plan on putting at least 500 hrs into the game so I can learn how to drum and learn some great songs on guitar. 

I am not sure about this since I have put around equal amounts of time in all my games, but if it had to be one, it would be Demon's Souls, followed by Dragon Age. Also MAG 70 hours is a contender as well.

Probably Starcraft 2 or Mass Effect 2 (or Mass Effect series if I count Mass Effect).

400 hours thereabouts in Bad Company 2 and about 300 hours in Reach.  Great games.

Minecraft wins that title easilly. That game basically consumed my life for a month. How many hours I haven't a clue, but has to be in the 100s.

Toss up between Black Ops and Gears 2 for second place.

250 hours on monster hunter tri,

75 hours on Dragon quest IX

30 hours NMH2

15 hours on Metroid toM

and so on...