Spelljammer

Spelljammer is a campaign setting for the Dungeons & Dragons role-playing game. It introduces into the D&D lexicon the Ptolemaic concept of crystal spheres (each of which is roughly the size of a solar system), which may contain multiple worlds and are navigable using "spelljamming ships"--magical airships which are operated by the power of magic and are capable of flying into not only the sky but into space. With their own magical fields of gravity and atmosphere, the "ships" involved tend not to resemble the spaceships of science fiction, but galleons, animals, or even more wildly fantastic shapes. Both alien space ("wildspace") and planets are inhabited by strange and dangerous creatures unknown to "groundlings", and the alien races engage in spelljamming and space warfare as well.

Travel between different crystal spheres is accomplished by journeying through the phlogiston, a highly-flammable medium in which the spheres are suspended. While the distances between spheres are vast, fast-moving currents in the phlogiston can shorten travel times if properly navigated.

The Spelljammer setting is designed to allow some fantastic space adventures to take place within the traditional sword and sorcery milieu of Dungeons and Dragons; it also provides as a vehicle for crossovers between other D&D settings, in much the same fashion as the Planescape setting. Though the cosmology is derived largely from the Ptolemaic system of astronomy, many of the ideas owe much to the works of Jules Verne and his contemporaries, and to related games and fiction with a steampunk flavor.

Each of TSR's other campaign worlds had their own sections in the Spelljammer Boxed Set - Realmspace for the Forgotten Realms, Krynnspace for Dragonlance, and Greyspace for Greyhawk. Along with the new sphere - Clusterspace - they were known as the "Big Three and Astromundi".

External links

Spelljammer for D&D 3e (http://www.spelljammer.org)