Less than a week ago, Twitch speedrunner Highspirits speedran Dragon Quest 1 thru 9 all in a row without sleeping. He didn't play them in exact order, in order to retain his sanity a tiny bit. Clocked in at like 87 hours I think?
I think technically he took a few power naps during said marathon...? But they totaled up to under 1 hour. Cat naps!