DoDS here. I'll maybe hop into another game for an hour max, but I will always end the night on DoDS. I don't know what it is, but it drags me back in for some more
Counter-Strike Source!
I've played that for 260+ hours, and I've only had it for a Year.
The only game i have played more is Metal Gear Solid 2....
Ahh... I must have played that game for over 1000 hours.