Big Mac wrote:I suppose that, a flatworld doesn't really need to have different celestial mechanics to work in a Spelljammer context. If you replaced our own Earth with a flatworld, that was tilted over at the same angle as our real-planet, you could get a 24 hour day night cycle and a 12 month season cycle.
The main difference would be that day would be day everywhere (on that one side) and night would be night everywhere.
I'm suggesting the sun vanishes into another plane of existence during the night, so one side has a day/night cycle and the other only experiences darkness. But short of that, the other side could still be barren for other reasons.
You could still have a "north pole" and a "south pole" but I'm not sure they would stay cold all year. I think the pole would be cold during the "winter" and hot during the "summer".
There are (at least) two different models for this.
1. Terry Pratchett's Discworld has only one "pole," a mountain in the center of the disc called Cori Celesti
. This is the coldest part of the world, surrounded by an arctic circle, then a temperate climate, and finally a tropical climate along the Disc's rim (because the sun comes closer to the rim in its daily cycle than it does the hub). Only one side of the disc is inhabitable. Night happens when the sun is on the other side of the Disc, underneath the legs of the elephants who stand on the turtle's back. Day doesn't happen all at once because the speed of light is very slow on the Disc (the Disc's magical field slows the speed of light).
2. Modern YouTube flat earthers
teach that the north pole is actually a cold region in the center of the flat world, then a temperate zone surrounding that, then a tropical zone, then another temperate zone. There's also an antarctic region along the world's rim. The world is surrounded by a wall of ice, which is why nothing falls off it. This wall of ice is what NASA's conspiracy would have us believe is the south pole. As far as I can tell, the justification here is that the sun orbits above the Earth's tropical zone, so both the ice wall and the north pole are further away from it. The sun is, if I understand this right, always facing the top side of the flat earth, but night happens when the sun is above the opposite semicircle from where you are, which also explains time zones. I think the sun is very small and when it's over the opposite semicircle it's too small to see?
In both cases they don't deal with the possibility of another inhabitable side of the world, since gravity is assumed to go in a single direction. The way the Discworld works is actually compatible with Spelljammer physics because the Disc lies on top of a giant turtle, and since the turtle's gravity plane is larger than the Disc's it takes precedence (although starbeasts don't normally have gravity planes in Spelljammer).
Another option would be to use Hollow Earth logic. That could actually locate the True Afterlife inside Manifest's planet. And if you want to have undead inside there too, the way to do that could be to have no inner sun.
That's another possibility.
But, I might be tempted to skip all of that, go back to a conventional world, but to have an inner core made entirely of ectoplasm.
Why is the inner core made of ectoplasm? Is it filled with dead ghosts?
If you are going to make Coil into another celestial body, why make it a moon? If it was another planet (G-Venus or G-Mars) it would get closer and further away from the world of Manifest.
I'm assuming a geocentric cosmology, so all of the planets other than the primary are effectively moons. The idea is that everything would literally center around Ghostwalk's planet. I thought of Coil as a moon so that it would be more prominent in the sky, though obviously that's not essential.
If you wanted to add planets to the system that weren't moons, one possibility is Ranais
, a world detailed briefly in the Planescape adventure Dead Gods
. Ranais was once a world that venerated gods of the dead, but when one city, Moil, turned away from the worship of Orcus, Orcus tore the city from the world and cast it into a demiplane, and the rest of the planet was "hurled into cataclysm and chaos." The world is now dead, and haunted by undead. The sun is "tiny and white in the sky," which suggests that if it's in the same system as the Ghostwalk planet, it's much further away from the sun. The main reason to place Ranais in the same sphere as Ghostwalk is the Orcus connection. There's also a Monte Cook connection, since Monte Cook wrote Dead Gods
Anyhoo, I must look for some more canon stuff to use as inspiration. I did find the Skystones
. They came from outer space.
The Skystones look to me like the remnants of another Manifest, somewhere on some other world or perhaps built on an asteroid, that shattered and fell to the Ghostwalk planet. They still have some of the same properties that the Manifest of Ghostwalk's world has, and perhaps they even have tiny portals to the True Afterlife. There might be other pieces of the golden, shattered Manifest-like city still floating in space.
Personally, I'd rather have a planetary system, with some other places to travel to.
That's understandable, I guess. One extreme possibility is to turn all of the nations described in the Ghostwalk sourcebook into planets. Otherwise, it's difficult to carry the themes of a setting centered around a single city across multiple planets, which is why I'm fixated on the idea of dead worlds, shattered or otherwise broken, as examples of what might happen to the Ghostwalk planet.
Perhaps besides dead worlds, there are also worlds that have been raided or colonized or otherwise attacked by the yuan-ti in Coil's long orbit through the sphere.
Where did you get "Ghol" from?
I made it up. The first three letters are the same as "Ghost." In the context of this thread I have to call it "the Ghostwalk world/planet," which is cumbersome. In the context of a homebrew version of Ghostwalk, I'd definitely give it a proper name. If Ranais is part of the same system, maybe all the planets have the same suffix, so the Ghostwalk planet could be Ghonais or Gholais.
As long as I'm wildly speculating, here's a list of potential Ghostspace worlds:
: A steamy jungle world, close to the sun, pitted with ruins and craters and abominations left over from wars with the yuan-ti. Its manifest zone is a corrupted ruin. Ghosts can still access the afterlife through it, but the ruin is currently too dangerous for living folk to remain in for long, unless they want to transform into aberrations.
: A temperate world with a functioning city called Manifest built over its manifest zone.
: Once a golden world covered with beautiful cities and ruled by powerful mages, now completely shattered and nothing but debris drifting through space. Sometimes bits of Aurais crash into other worlds in this system.
: The most distant world from the sun, this planet is cold and dead and haunted by undead after it was destroyed by a unique, epic-level spell or artifact activated by Orcus. Once a city called Moil was built around a manifest zone on this world, but Moil has been cast into a demiplane and shrouded by eternal night. Without its manifest zone the world was flooded by ghosts unable to reach the afterlife, and all life on the planet died.
: A rogue planet, demiplane, or moon that comes closer to different planets in its long, eccentric orbit.
If I was going to invent a name, I'd be tempted to do something that is connected to Sean K Reynolds or perhaps Monte Cook.