I'm an ARG hater. I love Inscryption, for example, but find the ARG elements corny and forced. Same goes for a lot of other games... but this felt truly realized and taking unique advantage of the medium I've never seen before.

Overall brought down a tiny bit because the fact you need to use a cipher at some point is very missable. It does at least give you the hint, which I'm thankful for, but I think it could be more clear.