Goetis
Welcome to Goetis
A triad of worlds that exist synchronously and affect each other. Inspired and loosely based off of the Lesser Key of Solomon, the setting is an alternate universe divided into 'worlds' arranged into a ladder scheme.
The three tiers are separate worlds with its own residents, each with separate awarenesses of sister tiers. The best analogy would be a megacorporation with an elevator activated by access cards; varying 'employees' have varying access rules. Each tier has its own duties, similarly to those of normal countries, with slight differences between the overworld and underworld alone.