The science fiction film 'Stargate', directed by Roland Emmerich and written by Roland Emmerich and Dean Devlin, was released, laying the foundation for the franchise.
The television series 'Stargate SG-1' premiered, serving as a sequel and expansion of the Stargate universe from the original film.
The spin-off series 'Stargate Atlantis' premiered, expanding the universe and exploring new storylines related to the Stargate mythology.
The original television series 'Stargate SG-1' concluded after 10 seasons and 214 episodes.