Material Plane

The Material Plane, or sometimes Prime Material Plane, is the plane of existence in which the world of Exandria exists.

Exandria

 * &rarr; Main article: Exandria.

Exandria is the world on which most events of Critical Role take place.

Satellites
Exandria has two moons
 * Catha: close to Exandria and appears large in the sky. It has a 33-day cycle during which it waxes and wanes.
 * Ruidus: the reddish-purple, maroon-brown color moon.

Abyss

 * &rarr; Main article: Abyss.

The Abyss is the home of demons like Yenk the goristro and demon lords like Yeenoghu.
 * In D&D: Dungeon Master's Guide, the Abyss is one of the Outer Planes. It "has a seemingly endless number of layers" and is associated with the chaotic evil alignment. That cosmology may not be canonical for Critical Role, but the Endless Maze from which Yenk hails corresponds to a canon layer of the Abyss.

Astral Plane

 * &rarr; Main article: Astral Plane.

The Astral Plane, or Astral Sea, contains gateways to other planes and is home to the githyanki.
 * According to Lady Allura, when a Bag of Holding is destroyed, its contents are jettisoned into the Astral Sea.
 * When Scanlan Shorthalt scried through his magical poo, his consciousness transcended the Material Plane, traveled across the Astral Sea, and arrived at his scrying destination on the Material Plane.

The Elemental Planes
The Elemental Planes intersect with the Material Plane. The druidic Ashari guard most of the portals at the connecting points.
 * Elemental Plane of Fire in Pyrah
 * Elemental Plane of Water in Vesrah and on Rumblecusp
 * Elemental Plane of Air in Zephrah
 * Elemental Plane of Earth in Terrah
 * Frostfell in the Frostweald, sealed by the Ashari

Ethereal Plane

 * &rarr; Main article: Ethereal Plane.

The Ethereal Plane overlaps the Material Plane, but they are somewhat out of phase with each other.

Far Realm

 * &rarr; Main article: Far Realm.

The Far Realm is another dimension that connects to the Material Plane in some places, often in the depths of the Underdark.
 * Clarota told Vox Machina that, should they try to enter through the rift to the Far Realm that they found while in the Underdark, their minds would break.

Feywild

 * &rarr; Main article: Feywild.

The Feywild, or Plane of Faerie, overlaps the Material Plane. There are many points of crossing, but Vox Machina only knows of one in the Frostweald.

Shadowfell

 * &rarr; Main article: Shadowfell.

The Shadowfell, like the Feywild, overlaps the Material Plane. The only known portals are the three magic siphons that were set up throughout Exandria.

Other Material Planes
Artagan says, "This is but one of many Prime Materials", and suggests that he and Jester could travel easily between them.