The Multiverse
The Multiverse is the general term for the infinite expanse of realities; each reality is itself of infinite scale, with some exceptions, and can be likened to the universe we inhabit.
The differentiation between realities lies largely in their unique physical properties. Each reality possesses its own local physical laws which can vary widely, though there is an overall unifying model common throughout the multiverse which allows for limited external prediction of a given reality’s state.
The Drift
The area between realities is occupied by the Drift, which can be likened to the empty space of our own universe. To an observer the Drift appears as a multi-layered ‘ocean’ of flowing narrative potential, most often perceived as pinkish purple though its colour can vary based on localised phenomena - the Drift surrounding driftstations is often tinted by the local concentration of narrative consumption. The primary means of travel through the Drift is by seamship, though seam-walkers are also able to pass through the Drift unaided for short periods.
Driftstations
Driftstations are artificial structures suspended in the Drift which serve as extra-reality seamship docks, residences and trading hubs. A significant example of a driftstation is the Cloud Archipelago.