So, back on live, I had this headcanon theory...
The setting, the powers, NPCs, your characters, the stories - everything - was in the mind of a person. Doesn't matter who. Just some person. Maybe your neighbor, maybe a child, maybe Jack Emmert, maybe a psychic, maybe whoever. It doesn't matter.
Maybe the imaginmaker represents themselves in the world as Faathim the Kind, or Montague Castanella, or Prometheus... or Nemesis.
The point is that it is all just in someone's imagination. That's why the world feels incomplete. It's why sometimes missions get bugged. The person whose imagination is everything, is just not imagining or completing every detail.