The Dream Cluster is a collection of worlds that have the quality of a dream. It contains fantastical worlds which are populated by strange fauna, outlandish flora, unconventional logic, or some combination thereof. To those outside the world, they often seem like a madhouse where the laws of physics are easily ignored if they apply at all. To the natives, however, every quirk makes perfect sense and is commonplace. Magic and science may or may not exist, but they are entirely incidental to the worlds' own brand of operation.