I really like how willing this game is to be mysterious, it adds so much to the story and the lore. Instead of dumping a bunch of info on you in the story you're just kind of dropped into a world where everything is already normal and left to piece together how things work as it progresses by context and bits of naturally delivered info. And there's loads of more long-term stuff like what the fuck the monoliths even are and how they operate and how MC's soul contracts function that's fun to think and theorize about