The Great Wheel is the cosmic structure that governs the interconnected planes of existence in the Planescape setting. It is a vast, intricate system of planes, each with its own unique characteristics, inhabitants, and traits. The Great Wheel is shaped like a massive wheel, with Sigil, the City of Doors, at its center. Radiating out from Sigil are various rings, each representing a different alignment, forming the Outer Planes. These planes reflect the diverse moral and ethical forces that shape the multiverse.
Outer Planes:
- Lawful Good: Celestia, the Seven Heavens, embodies order, justice, and purity. It is a realm of bright landscapes, divine beings, and eternal harmony.
- Neutral Good: Elysium, the Blessed Fields, represents balance, serenity, and unity. It is a plane of idyllic landscapes, free will, and benevolent spirits.
- Chaotic Good: Arborea, the Olympian Glades, exudes freedom, creativity, and exuberance. It is a realm of wild beauty, musical wonders, and chaotic spirits.
- Lawful Neutral: Mechanus, the Clockwork Nirvana, symbolizes precision, logic, and mathematical perfection. It is a plane of gears, levers, and Modrons, orderly constructs.
- True Neutral: The Outlands, the Concordant Domain, embodies neutrality and balance. It serves as a hub connecting all Outer Planes and is the home of the gate-towns.
- Chaotic Neutral: Limbo, the Ever-Changing Chaos, is a realm of raw chaos, constant flux, and ever-shifting landscapes.
- Lawful Evil: Baator, the Nine Hells, personifies tyranny, deception, and manipulation. It is a plane of infernal landscapes, devils, and malevolent schemes.
- Neutral Evil: Hades, the Gray Waste, represents despair, hopelessness, and apathy. It is a plane of desolate landscapes, undead, and eternal melancholy.
- Chaotic Evil: Gehenna, the Bleak Eternity, embodies destruction, madness, and nihilism. It is a plane of volcanic wastelands, demons, and violent turmoil.
The Inner Planes lie at the heart of the Great Wheel, elemental realms that embody the building blocks of existence.
- Positive Energy Plane: A realm of radiant energy that fuels life and healing.
- Negative Energy Plane: A realm of dark energy that engenders decay and destruction.
- Elemental Plane of Air: A vast expanse of sky and winds, home to air elementals and flying creatures.
- Elemental Plane of Earth: A realm of rocky terrain, mountains, and underground caverns, inhabited by earth elementals.
- Elemental Plane of Fire: A realm of blazing flames, volcanic landscapes, and fire elementals.
- Elemental Plane of Water: An expansive oceanic realm with underwater cities and water elementals.
- Elemental Chaos: The ever-shifting confluence of all elemental forces, where the planes blend and interact.
- Quasi-Elemental Planes: Border regions that bridge the Elemental Planes, such as the Plane of Smoke, Ice, Steam, and Magma.