Blackmoor Multiverse

[Havard]

Well this is a massive and excellent bit of work!

[*]Earth/Laterre (See Dave Arneson's WWII adventures, Tom Webster's Atlantis, possibly connections to Braunstein, Brownstone, DA's Napoleonics Campaign)
[*]Tekumel (See Prof Barker's and Dave Arneson's Blackmoor/Tekumel Crossover adventures as related by Chirine)
[*]Sheardraeth - The New Lands/Skelfer's Realm. More details)

These I would not consider "planes" but as part of the Other Realms section.

I think Earth and Tekumel are planets in the Blackmoor universe

This is certainly possible. Travel between these worlds does appear to have been through portals or magical means rather than space travel. The distinction between planes and planets is likely vague since such concepts have become more specific in later decades. If you look at HP Lovecraft's concepts, he often assumes Planes and Planets to be the same thing for instance.

and Shaerdraeth just seems to be a name for the "new lands" just south of the valley of the ancients.

I disagree. Shaerdraeth was the world discovered by Skelfer and is also the homeworld of the Docrae. The Docrae likely settled west of The Vales and were then driven to Blackmoor by the advancing Afridhi forces.

The region north of the Valley of the Ancients was sometimes called "the new lands" in the original campaign and the DA modules (See Veslo Meridan entry in DA1), but ZGG and CMP used this term and later Shaerdrath about a separate world. I believe this was their contingency plan for publishing D&D material should the Blackmoor lisence be lost. I believe Robert Reed has still not fully abandoned this idea.

[*]The Demon Realm - Where Calelrin was banished. The Abyss or Mystara's Pyts.
[*]Vermanius - More discussion here (Piazza link)[/list]
-Havard

Vermanius seems to be a location within the Demon realm.

I agree. There is not much to go on when it comes to Vermanius, but I personally like the idea of having Vermanius as a City in the Demon Realm.

I believe I recently came across a reference in the FFC to "Hell", which may or may not be the same as "The Demon Realm" (Or the Infernal Realm in the Age of the Wolf manuscript Scott refers to above). I will have to check the FFC again to find the page number though.

-Havard