Urriak Uruk
Gaming is fun, and fun is for everyone
Planescape.
Though, where is the Spelljammer one from? (And I’ve never considered Spelljamming as a cosmology, TBH)
Yeah, Spelljammer's isn't a cosmology; it's fully compatible with the Great Wheel.
Planescape.
Though, where is the Spelljammer one from? (And I’ve never considered Spelljamming as a cosmology, TBH)
Exactly this.4e Would Axis is the easiest to teach that is still flavorful.
"God stuff here. Element stuff there. Fey stuff and Shadowstuff here.
4E's World Axis, by far. It took the utter mess of the Great Wheel and made boring, nonsense places like the plane of fire or plane of water into actually gameable places where character won't either instantly die or have basically nothing to do.
As mentioned, Spelljammer didn't really have a cosmology in the sense you're describing here.
Exactly this.
For the first time in history, my players actually cared about the cosmology of their setting.