Several fictional universes exist in science fiction that serve as backstage for novels, short stories, motion pictures and games. This list includes: * The , by Jack McDevitt * The Alien Legion Universe, by Carl Potts, Alan Zelenetz, and Frank Cirocco * The Alliance-Union universe, by C. J. Cherryh * The Babylon 5 universe, by J. Michael Straczynski * The BattleTech universe, originally created by Jordan Weisman and Patrick Larkin and fleshed out by a multitude of other authors including Michael A. Stackpole, William H. Keith, Jr., Blaine Lee Pardoe, and Loren L. Coleman * The Battlestar Galactica universe, by Glen A. Larson. * The Bolo universe, by Keith Laumer. * The CoDominium universe, by Jerry Pournelle * The Culture universe, by Iain M. Banks * The Commonwealth Saga univer