itch.io

This was one of those moments where I started to come up with my own solution for a project and thought, "I should google it first."
Lo and behold, this is here and it's far better than anything I could have done. Massive, massive props MothMakes.

Alas, the UI features weren't quite up to the task back when I made the attempt. They may be nowadays, but I can't imagine diving back into it. The far easier solution was to give everyone a hidden zone, a pawn and two index cards (Character and Hidden Asset). We keep giant index cards at the end of the table for the pros/cons of the location, tarot cards for dealing,  and a whiteboard flat on the table for roughing the area out in marker. It's made for at least 100 hours of improv shenanigans with friends!
(Bonus: Keep a d20 on hand for handling character disputes with "highest wins")

I adore catbox so much that I've spent tens of hours learning how to use lua and xml to make an overly-produced table of it for my friends in Tabletop Simulator. 

10/10 best two dollars I've ever spent.