You are all computer geeks.

I think the longest I've played any one game (in one sitting) would have to be any of the Monopoly marathons I enjoyed in my pre- & early teens. As I remember, 12-15 hour games was usually par for the course.

And yes I'm talking about a real, physical, (analog) board game. Ya know, with real game pieces you can touch. And real opponents (that you can get highly peturbed with).

After the Monopoly phase, came a few years of World conquest...RISK! I seem to remember some of those games also going 15 or so hours as well.

...hmmm, does "head games" with a girlfriend count?