Adapting the alternative physics of Spelljammer to something new was the sticking point for me in turning the Toy Soldier Saga into something publishable.  I have worked on this concept for a long time, and I think I’ve finally come up with something that works but is its own thing.  Right now it’s a very loose idea and I will be working out the bugs as I write, but here it is, in a nutshell.

Crystal Spheres

Spelljammer’s “bubbles in space with crystal shells” idea is unique.  However, it’s based in Ptolemic physics.  How that worked was that the Earth was the center of the universe (and then the sun later on,) and everything we see in the sky is on the inside of a “crystal sphere,” interlocking within one another like Russian dolls.  Later theories of universe construction discussed the idea of the “crystal” actually being something a bit…