...don't get me started on my addiction to Hunt mod. I spent whole days on that, repeatedly. Longest I played Native in one go was for 21 hours once - 3am to midnight, essentially non-stop*.
*I had an 'early night' the night before, was woken up by a damned party up the street at about 2:45am with their shouting, bottles breaking and so on, so as I was'nt tired, I got out of bed & loaded up M&B as something to do for a few hours and then perhaps go back to bed...21 hours later I finally turned it off.