The Prime is the center of the physical cosmos — not metaphorically, but literally. The elemental planes arrange themselves around it as anchor points, each governing a force that the Prime draws into itself and holds in equilibrium. It is the one plane where earth, water, air, and fire coexist, where magic and shadow press in from opposite sides, and where gravity pulls everything into coherent shape. The result is a universe capable of sustaining life in a way no other plane can.

It is also enormous. The Prime is not a single world. It is a universe — containing stars, galaxies, solar systems, and an unknown number of inhabited worlds. Dort is one of these. It is not the only one.

The stars visible from Dort's surface are part of the Prime's larger structure. Each represents a point of magical energy as much as a physical body — the Prime doesn't separate the arcane from the material, so the forces that govern combustion in a star and the forces that govern spellcraft on a world below are part of the same system. Scholars who study celestial bodies long enough begin to notice patterns that don't correspond to natural physics alone. Most file these observations away. A few pursue them.

Dort sits within a solar system that includes other planets. These worlds are visible from Dort in the right conditions — some are bright enough to track with the naked eye across seasons, others require instruments to distinguish from stars. What lives on them, if anything, has not been established. Dort's scholars have theories. Those theories have not been tested, because nothing from those worlds has arrived on Dort, and nothing from Dort has reliably reached them. They exist as presence rather than knowledge: a reminder that the Prime is larger than the part of it anyone has mapped.

Magic is distributed unevenly across the Prime. Dort sits in a region with relatively stable arcane density — enough that magic is a functional part of daily life, governed by understood principles. Other parts of the Prime have different relationships with arcane energy. Some worlds are thought to have almost none. Others, if the oldest portal records are accurate, are saturated to the point where the separation between intention and effect barely exists.

The physical planes are not metaphysically adjacent — they are spatially arranged. Understanding the layout matters for understanding why each plane behaves the way it does.

The Nexus occupies the bottom of the structure. Gravity requires a foundation, and the Nexus provides it: the anchor point from which all physical law radiates upward. Without it, the arrangement of everything above would not hold. It governs the motion of celestial bodies within the Prime, the weight of matter in the Mineral Plane, and the structural coherence of the planes as a whole.

The Mineral Plane sits above the Nexus and below the Prime. This is not accidental. Earth settles. It compresses. It accumulates below what floats above it, and so the plane of elemental earth occupies the position between pure gravitational force and the mixed reality of the Prime. The Prime draws from it accordingly — mountains, bedrock, the density that keeps worlds from flying apart.

The Prime holds the center. The other elemental planes surround it at the same level — The Ember and The Tidal Realm to either side, The Arcana and The Dim pressing in from the remaining two directions. This forms a cross-section: fire and water balancing each other laterally, magic and shadow doing the same along another axis, with the Prime at the intersection of all four. The balance is not static. The planes exert pressure against each other constantly, and the Prime's stability comes from the fact that they cancel out. A significant shift in any one of them would be felt at the center.

The Zephyr sits above the Prime. Air rises. This is the physical law the Nexus establishes, and the Zephyr's position reflects it — the plane of elemental air floats above everything else in the physical structure, boundless and uncontained.

The Shattered Domain occupies the same upper position as the Zephyr. The gods' plane does not fit neatly into the elemental arrangement because the gods are not elemental. They were born from the shattering of something that preceded the current cosmological structure, and the Shattered Domain exists above the Prime in the way that things born from faith and power exist above the material — not by the same logic as earth and air, but adjacent to it. Common people throughout Dort describe the divine as living "above" or refer to the sky itself as where the gods dwell, and they are not entirely wrong. The Shattered Domain and the Zephyr share the upper position, which is one reason the language of divinity and the language of sky have become entangled in most mortal cultures.

The Soul Planes exist outside this physical arrangement entirely. They are not above or below or to the side of the physical planes. They occupy a different kind of location — adjacent to death rather than to space. Accessing them requires passing through the Silver Road or entering through one of the plane-adjacent boundaries; no amount of physical travel through the Prime will bring someone closer to Sheol or Paradiso.

The Mystical Planes are situational. The Veil, The Somnium, The Continuum — these exist where the conditions that generate them exist. The Somnium is present wherever minds are sleeping. The Continuum is present at every moment simultaneously. The Veil wraps the physical planes like a secondary skin. They do not have fixed coordinates in the architecture.

Dort is not cosmologically unique. It has more written about it than other worlds in its solar system because it is the world where records have been kept, not because it is inherently more significant. It sits in a relatively stable part of the Prime — stable gravity, stable arcane density, stable enough elemental balance that life has had time to develop complexity. Other worlds in Dort's system may share some of these conditions. Whether they do is unknown.

What Dort has that no other confirmed world possesses is a functioning off-world portal network. The Heavens, a floating city above northern Antaea, contains three confirmed portals with destinations outside Dort's solar system. These portals do not have fixed destinations — their endpoints are determined by the crystal combinations used at the time of transit, and the records of where they've led and where they might lead are held by the city's portal scholars. The architecture of the portal network itself predates The Heavens; the city was built around access points that already existed. Who built the portals originally, and to what purpose, is a question that the scholars have been working on for generations.

Dort's position within its solar system makes it the center of whatever cosmological story is currently being told. That does not mean nothing is happening on the other worlds. It means no one has sent back a report yet.