And as it turned out, I posted prematurely with absolutely no idea of what the hell I was talking about (typical). I assumed all i had to do was survive the 3 years with positive relationships with the 5 families and all meters in the black. I did, and got booted out of town for my troubles. It was only after going to the Steam forum that I learned you have to identify and sacrifice the 9 heretics to actually “win”.
Someone on Steam commented that this is essentially Werewolf, and that seems a fitting description.