Forgotten Realms Multiverse

The Forgotten Realms exists within the broader Dungeons & Dragons cosmology, structured as a series of interconnected planes of existence. Realmspace is part of this cosmic structure.

The Material Plane

• Realmspace is a physical region of the Material Plane—the "prime" plane where Toril and its solar system reside.
• The Material Plane is where most mortal life exists and where the majority of the Forgotten Realms' adventures occur.

The Transitive Planes

These planes serve as "bridges" between the Material Plane and other planes.

• The Astral Plane: A timeless, silvery void connecting the Material Plane to the Outer Planes. Souls pass through here on their way to the afterlife. Realmspace can be accessed via astral projection or portals.
• The Ethereal Plane: A ghostly mirror of the Material Plane, it allows for travel and hidden observation within Realmspace.

The Inner Planes

The building blocks of the multiverse, these planes govern the raw elements:

• Elemental Planes: Air, Earth, Fire, and Water, which influence the natural forces in Realmspace.
• Para-Elemental Planes: Where elements combine (e.g., Smoke, Magma).

The Outer Planes

These are realms of gods, fiends, and celestials. Mortals access them via the Astral Plane.

• The Abyss: An infinite, chaotic series of layers ruled by demons.
• The Nine Hells (Baator): The lawful evil plane of devils.
• Celestial Planes: Domains of good-aligned deities, like Mount Celestia.
• The Fugue Plane: A waystation for mortal souls before being claimed by gods or fiends.

Other Relevant Planes

• The Feywild: A parallel plane of vibrant nature and fey creatures, mirroring the Material Plane in a fantastical form.
• The Shadowfell: A dark, twisted reflection of the Material Plane, dominated by death and shadow.
• The Far Realm: A plane of madness beyond known reality, home to alien horrors like aboleths and mind flayers.

Realmspace and Planar Travel

• Spelljamming: Spelljammers allow physical travel through Realmspace and beyond the crystal sphere into the Phlogiston, which connects to other crystal spheres.
• Portals and Magic: Magical gates, divine interventions, and planar spells (like Plane Shift or Gate) allow access to other planes directly from Realmspace.