D&D General What Does Your Cosmology Look Like?

So to start with, I'm good with dimensions being "parallel but offset" and not being flat "planes" but blobby n-dimensional shapes that connect to whatever they need to . So lots of "this plane has a hole that the other plane passes through." Which means the model is very representational rather than being a map.

The "inner" planes are primal and elemental. Fire, air, earth, water. Mortals often perceive them as one big dimension but rather than having "dimensional boundaries", they are physical ones. All the air is the Plane of Air. All the rock is Plane of Earth. All the water is Plane of Water. All the Fire is Plane of Fire. You make a fire somewhere in the primal realm? Congratulations, that's a gate to the rest of the plane of Fire. Walls of Fire are portals. Same for Wall of Stone. The cold regions are far from the plane of Fire. The dry regions are far from the plane of Water. Steam is where Water is near Fire. Dust is Air and Earth. Etc, etc.

The most active parts of the primal planes is a kind of headwater to a "river" of sorts, but its more of a point source for creation, a white hole. Fire, water, gale force winds, rock all blasting forth from this place. At the far end of the omniverse is the opposite, the black hole, where everything turns to ice, ash, and dust and is consumed into nothing.

The outer realms are places of ideas: good, evil, hate, love, order, chaos. Also one big realm, in a way, but with very specific gates, tunnels, paths, caves, etc connecting them. Good and evil are far apart, as are order and chaos.

The mortal realms are a midgard, the place between, having elements of primal inner and conceptual outer. Not all get equal shares in all things.

There is also the Shining Lands and the Gloaming Lands, the feywilde and shadowfell, which are "upstream" and "downstream" of the mortal realms. The Feywild reflects all the mortal realms, but with the intensity turned up to 250%, while the Shadowfell is a rotting, decrepit version of all the mortal realms , foretelling their eventual demise. These are my Positive and Negative Material Planes. The Feywild is not all lightness and smiles; the winters are colder, the deserts are more brutal, the seas have higher waves, the storms are more terrifying. It's "more" not "better." And the Shadowfell isn't devoid of kindness but its a tired, exhausted kindness. Undead are drawn to it not because it nourishes them, but that the gnawing hunger becomes a dull ache.

The mortal realms almost never touch directly, but almost all of them touch both the feywild and the shadowfell, the primal realms and the conceptual realms, though usually at small gates that often ebb and flow with seasons, stars, and holy days.

The void between the primal and mortal planes is the ethereal, the void surrounding the outer and separating it from the mortal realms is the astral.

Perhaps the stars are the other mortal planes or perhaps the stars are other cosmologies that could be reached through the astral.
 

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“the world we preceive is comprised of multiple essences, each reified and fixed in a material substance just as the heart of fire is held in the strata of stone, stone is cooled by the water layer and water is held in the vapor which once more ignites as quintessential flame. The alchemist seeks to extract this quintessence from their essential ingredients and must thus work to remove the gross substance, cleansing and refining until we release the true radiant quintessence within.
This quintessence is the closest our mundane senses may get to the Astral Radiance which lies beyond the ethereal veil of our concious perception and constructed reality..."
- From Speculations on the Nature of Quintessence, an Essay by Orbril the Gnome, Professor of Applied Alchemy, Imperial Research Academy.
 

I made a generic version of the multiverse for use in non-D&D/DMs Guild material, though I generally just use a mix of Great Wheel and World Axis when actually DMing.
Generic Multiverse.png
 

Unspecified in detail because I want it to be a) not a focal point b) be mythological and unexplained. Having a specified cosmology and telling it the players would make it explained and "scientific".
 

I don't have other planes of existence, and the gods aren't popping in to make personal appearances.

That said, the gods are heavily believed in, although each culture has their own religion. And there are Realms. These ethereal balls float around in the solar system and seem drawn to the world. And when they cross, there are devastating consequences. The Cursed Realm, Dead Realm, Elemental Realm, Realm of Giants, Shadow Realm, and Supernatural Realm are all very real. They gave the world magic, yet the only one the peoples of the world have been able to control was the Elemental Realm. They shaped the rise and fall of kingdoms. They have shaped parts of the geographical landscape. They have isolated areas. One of the religions is based on the Realms. They are a feared, yet integral part of culture, living, and as rumor has it, creation of adventurers. Here was my short write up on the Realms:


Realm Overview

The Realms impact all aspects of life on Alm and in Allor. They affect the people in ways unsuspecting. Families have been destroyed when one of their members is cursed with lycanthropy. Towns have been destroyed when plagues of the dead arise. And whole kingdoms have gone to war when the evil influence of the Shadow Realm takes hold.
The Realms also bridge into the religious and historical thinking for the people in Allor. They ponder the Realms’ mysteries and wonder why the Realms influence the way they do. They note the stories from the past and hope to find better ways to deal with the Realm’s transgressions. And they question their own part in the Realms’ effects.
These mysteries also inspire curiosity. People from all walks of life, from beggar to noble, from man to woman, from halfling to furlay have all at one time or another wondered what it means to control the Realms. To harness their magic. They study its influence, not as a bane, but as a boon. At present, only one realm, the Elemental Realm, has been bent to help people. The others have simply sewn chaos in those that tampered with its mana.
And of course, there are the creatures that the Realms have brought to Allor. Vengeful harpies, fiery efreets, evil jakkhos, deadwoods, shivs, and banshees. These creatures plague the people, land, and thoughts of entire areas worse than any natural beast could do.
 

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