Dimensions

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Arcane Cluster
Dimension – Call of Cthulhu
Dimension – Deadlands
Dimension – Dragonstar
Dimension – Evil Dead
Dimension – Shadowrun
Dimension – The Great Wheel
Dimension – Urban Arcana
Dimension – X-Crawl

Iron Cluster
Dimension – Alien and Predator
Dimension – Federation
Dimension – Gamma World
Dimension – Modern Earth
Dimension – Star Frontiers
Dimension – Traveller

Aerth Cluster
Dimension – Age of Adventure swashbuckling
Dimension – Agents of Psi Modern day, no magic, all psionics
Dimension – Atomic Sunrise Mad Max
Dimension – Bughunters Alien/Predator
Dimension – Dimension X
Dimension – Earth Inherited Post Rapture
Dimension – From the Dark Heart of Space Fifth Element
Dimension – Genetech Moreaus
Dimension – Plague World The Morrow Project
Dimension – Pulp Heros 40s pulp
Dimension – Shadow Chasers Buffy,
Dimension – Shadow Stalkers 1800s Shadow Chasers
Dimension – Dimension – Star Frontiers Star Law
Dimension – The Wasteland


Dimensional Qualities
Dimensional Flux
Magic: Awakening and Spell Drain | Forbidden Magic | High Magic | Incantations| Lesser Magic
Psionics: High Psionics | Lesser Psionics
Quantum

Dimensional Pathways
The Bleed
The Far Realm

Dimensional Nexus
Cynosure
Multiple Oerths
Tanelorn
The Land of the Lost

Mutiversal Metaclusters
Amber and Shadow
The 52
The Marvels
The Million Spheres

The Multiverse is the set of multiple possible universes (including the historical universe we consistently experience) that together comprise everything that exists and can exist: the entirety of space, time, matter, and energy as well as the physical laws and constants that describe them. The term was coined in 1895 by the American philosopher and psychologist William James The various universes within the multiverse are sometimes called parallel universes.

Known types of parallel universes include alternative universes, quantum universes, interpenetrating dimensions, parallel dimensions, alternative realities, alternative timelines, and dimensional planes, among others.



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These dimensions can be pictured as soap bubbles floating through the murky insanity of the Far Realm in much the same way that Crystal Spheres float through the Phlogiston of the Prime Material Plane.

The laws of reality can vary wildly from one dimension to another. For example, there could be several dimensions the laws of physics and magic work like the ones in the Planescape Multiverse, with only slight differences, while in others either or both could be radically different if not absent. Our Earth and its universe are one dimension, and there are many parallels that “mirror” our earth such as the so called Gamma Terra and Dragonstar dimensions. (See also Multiple Oerths.)

Whether the number of dimensions is finite or infinite is a question for the sages, but there are certainly a multitude of them, making for a dazzling array of possibilities.

Probability travel is an extremely hazardous pastime, and one embraced by few. Indeed, few are even aware of the potential to do so.

Elminster of Shadowdale, Chosen of Mystra in Realmspace, has documented many trips to our own reality over the years. Murlynd of Greyspace spends much time in a world that resembles our own past in the days of the Old West.

It is not unknown, although the knowledge is rare.



The structure of the Multiverse is described as a web of 196,833 universes arranged in a pattern resembling a snowflake, each universe separated from its neighbors by a medium called the Bleed, the Far Realm, the Void and a host of other names. It is said that a “partial multiversal collapse” occurred in 1985, causing radical alterations to countless universes.

Dimensions

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