The Gorvan System is a galaxy much like ours, with its own planets, sun-stars, and celestial phenomena. The difference, however, is habitation. Many alien peoples call the Gorvan System home, and its 12 worlds display diverse habitats and geography. The main planets that the eight survivors learn about are Sahara (Dalar 3), Trylithia, and Vexador. The other worlds are explored or mentioned in sequels.