Imagine a universe where square worlds spin around gemstone suns. Where planets lie cradled in the roots of an oak tree so vast its leaves twirl around brightly burning suns. Where ships of wood sail the void between worlds, and battle each other with catapult and ballista, spell and sword. Where an asteroid may be a safe harbor, a slaver’s den, or a hungry creature eager to devour any that pass by. Where daring swashbucklers and scoundrels race for fantastic treasures and literally touch the stars. Where terrifying beasts with the power to destroy whole worlds roam.
Welcome . . . to the universe of Spelljammer!
In the Spelljammer campaign, the fantastic is possible and one is limited only by the depths of their imagination. Sailing ships, enwrapped in bubbles of air, travel empty Wildspace, moved by the power of their mystic helms. Gravity is a matter of convenience, where a captain can tour the bottom of his ship, and worlds come in all shapes and sizes. Whole solar systems are surrounded by colossal spheres made of an unbreakable, crystal-like substance to protect them from an ocean of swirling light and color, the flammable Phlogiston, which divides the void between stars.