Cyberwar (DOC: The Doctors: 30 Years of Time Travel and Beyond) was an unproduced film produced by BBV Productions. After the success of the Auton Trilogy, BBV attempted to secure the rights to the Cybermen hunting characters on a remote island.[source needed] In The Doctors: 30 Years of Time Travel and Beyond, released in 1995, Cyberwar was slated as an "upcoming release", that teamed-up the Cybermen and the Ice Warriors, with new designs created by Chris Fitzgerald. (DOC: The Doctors: 30 Years of Time Travel and Beyond) Negotiations fell through and elements of the script were turned into an audio story, Cyber-Hunt, which introduced a new alien race reminiscent of (but distinct from) the Cybermen: the Cyberons. A few years later, the Cyberons appeared in Cyberon, a home video feature film, which reintroduced Jo Castleton (who had played Natasha Alexander in the Auton Trilogy) in a new part, psychiatrist Lauren Anderson. Although Cyberon had no official ties to the DWU upon release, it was intended to take place in the DWU's continuity, as evidenced by the Cyberons and Lauren Anderson's subsequent appearances in other BBV productions alongside "real" DWU characters.[source needed]