According to Steam, 1,904 hours, so, over a thousand more than the highest option. And I know there's at least a few folks that are over 2,000 that I've seen on other threads.
And I consider my Steam tally a good estimate, because while at least a handful of hours logged were hours AFK, there's also some hours not logged where I actually was playing but internet and/or Steam went out.
What always amazes me is that only ~80% of people have popped a goody hut (ruin) when I check the Steam achieves. This likely means ~20% of people bought the game, were gifted it, or got it as a pre-order bonus for something else and never even played it, as that achieve is the most basic of all. The first time I saw that, it was genuinely strange until I thought about it and realized that Steam counts anyone who
owns the game, even if they have not
played it in figuring those percentages. I always keep that in mind when I see in threads like this that far less than ~20% of people on CFC have yet to play the game, and I always have to remind myself that CFC is disproportionately skewed towards being populated with people who usually have played at least a few hours
.