What's the longest time you've ever gamed in a single sitdown?

[MrMarc]

Longest for me that I can recall was a 14 hour session on Final Fantasy 7.

Long session, I know it's not insanity like some of the people's listings here but I have one mega catch to my 14 hour session.

.....

I had bad diarrhoea at the time!

Amazed how long I managed to keep seated through that session!