Stargate is a adventure

Adventure science fiction

Adventure science fiction also Sci-Fi Adventure is a subgenre of science fiction. Covers tense and rousing stories involving aliens, robots, the future and/or other science fiction elements....

 military science fiction

Military science fiction

Military science fiction is a subgenre of science fiction in which the principal characters are members of a military service and an armed conflict is taking place, normally in space, or on a planet other than Earth...

 franchise

Media franchise

A media franchise is an intellectual property involving the characters, setting and trademarks of an original work of media , such as a film, a work of literature, a television program or a video game. Generally, a whole series is made in a particular medium, along with merchandising and endorsements...

, initially conceived by Roland Emmerich

Roland Emmerich

Roland Emmerich is a German film director, screenwriter, and producer.His films, most of which are Hollywood productions filmed in English, have grossed more than $3 billion worldwide, more than those of any other European director...

 and Dean Devlin

Dean Devlin

Dean Devlin is an American screenwriter, producer, television director and former actor. He is the founder of the production company Electric Entertainment.-Personal life:...

. The first film in the franchise was simply titled Stargate

Stargate (film)

Stargate is a 1994 American adventure-military science fiction film released through Metro-Goldwyn-Mayer and Carolco Pictures. Created by Dean Devlin and Roland Emmerich, the film is the first release in the Stargate franchise...

. It was originally released on October 28, 1994, by Metro-Goldwyn-Mayer

Metro-Goldwyn-Mayer

Metro-Goldwyn-Mayer Inc. is an American media company, involved primarily in the production and distribution of films and television programs. MGM was founded in 1924 when the entertainment entrepreneur Marcus Loew gained control of Metro Pictures, Goldwyn Pictures Corporation and Louis B. Mayer...

 and Carolco, and became a hit, grossing nearly $200 million (USD) worldwide. Three years later, Brad Wright

Brad Wright

Brad Wright is a Canadian television producer, screenwriter and actor. He is best known as the creator or co-creator of the television series Stargate SG-1 , Stargate Atlantis and Stargate Universe...

 and Jonathan Glassner

Jonathan Glassner

Jonathan Glassner is a television writer, director, and producer. He is known for his involvement with Stargate SG-1 and The Outer Limits. Glassner was initially noticed as a writer for his work on Alfred Hitchcock Presents...

 created a television series titled Stargate SG-1

Stargate SG-1

Stargate SG-1 is a Canadian-American 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 feature film Stargate by Dean Devlin and Roland Emmerich...

as a sequel for the film.

In addition to film and television, the Stargate franchise has expanded into other media, including books, video games, and comic books.