Stargate SG-1 (often abbreviated as SG-1) is an adventure and military science fiction television series and part of Metro-Goldwyn-Mayer's Stargate franchise. The show, created by Brad Wright and Jonathan Glassner, is based on the 1994 science fiction film Stargate by Dean Devlin and Roland Emmerich. The television series was filmed in and around the city of Vancouver, British Columbia, Canada. The series premiered on Showtime on July 27, 1997 and moved to the Sci Fi Channel on June 7, 2002; the final episode first aired on Sky1 on March 13, 2007. With 214 episodes over 10 seasons, Stargate SG-1 had surpassed The X-Files as the longest-running North American science fiction television series, until it was surpassed by the series Smallville in 2011, which was then surpassed by Supernatural in 2016.