by GrandKhan44
Another update, 144 plays logged.
I have added the bigature scenario to the questions, I forgot about it. It appears that the game is easier with more investigators, but there still is not much data for more than two investigators, and the drop in the success rate for 3 investigators indicates something else is going on as well (maybe the two investigator games are to some degree solo learning games and that is why they have a lower success rate for example).