This is the A to Z of the Polyverse.
What is it? Glad you asked.
The Polyverse is what I call the setting of the various DnD campaigns I have run stretching back to the early 90s starting with ADnD 2E's Haunted Halls of Eveningstar. It was the first module I ever ran and my first time running ADnD 2E. I made a ton of mistakes. A. Frickin. Ton.
I had read the Avatar Trilogy and stupidly had Lolth tempt a player who wholeheartedly tried to kill the rest of the party. As they chased him out of Eveningstar he set fire to some grasslands to cover his tracks.
Those actions created a group of Elven terrorists who are plotting to take back their homeland known as the Kinn'A'Nacht.
From there a high level Wizard named Dunwich began recruiting for a secret society known as the Circle of Fire with the ultimate goal being to kill the Gods and replace them with him and his fellow members.
Then I didn't run much DnD for a long time.
However, when 5E came out I started making up for all of that lost time. The Polyverse saw the murder of Tiamat and the ascension of Ashardalon as the God of Chromatic Dragons.
Then Saint Cuthbert was trapped in the Demiplane of Dread known as Ravenloft. The last group who tried to rescue him wiped each other out when one of the PCs found the Hand of Vecna.
The City-State of Jarlsburg and Duchy of Saint Cuthbert/Saint Albus both became major areas for my games.
In my most recent game the city of Greenway and its Hexenschule came into focus and a plot by the Elves to murder Lolth and replace her with her brother Vulkoor was revealed. And Dunwich and his secret society began to set things into motion in the open by recruiting the PCs...it just took me over 30 years to get there.
Things are very much afoot.