This game is in the same genre of Obra Dinn, where you’re given a manifest to fill out (in this case a family tree) and a whole load of information that needs to be dug through to fill out.
The mysterious quest giver starts you off with some information, and then you’re left with your available tools to find out more: a text lookup service (the “Internet”), a book lookup service, and magazine archives to look through. It’s a lot of reading compared to Obra Dinn’s videos, but I’m having fun with it so far.

I’m playing this with my partner actually. We’re both reading along and coming up with theories. I’m foreseeing a few discussions on what second-cousins-twice-removed are.
The soundtrack is pretty cool too. A nice jazzy number.