Just got done playing this with some friends and discord and it was an absolute blast. I'm particularly impressed by how filling out the family tree felt like just the right difficulty - we never got stuck in a way that was frustrating, it was always just compelling. It helped that most of the non-optional information could be found from a variety of sources, or logically intuited/figured out by process of elimination after certain points. I imagine writing something like this has got to be a real balancing act and takes a huge amount of skill to pull off. The actual white-box typed in answers at the end were perhaps a bit too easy to come to, but that really felt secondary to the journey getting there.
I enjoyed this more than I tend to enjoy a lot of typical mystery game structures which tend to have a whodunnit or a howdunnit element to them, because I feel like I can get bogged down in the more open-ended nature of that kind of question. The fact that exactly what we were looking for in this game was so concrete - names, photos, and jobs - stopped me from getting lost in the weeds of wondering if I was basing my entire gameplay off of incorrect assumptions and made the actual search just a blast to do.
There's a ton of really funny, quirky, or otherwise interesting stuff to be found in here even outside of the enticing yarn of the Roottree family. The AI generated photos really help sell the epistolary format. Everything going on here just works! Great stuff.