Stargate SG-1 takes place in a military science fiction environment and employs the common science fiction concepts of strongly differentiated characters fighting an unequivocally evil enemy (the Goa'uld).
However, it links alien races with well-known Earth mythologies, by use of the central Stargate device.
Near-instantaneous interplanetary travel allows quick narrative shifts between the politics on Earth and the realities of fighting an interstellar war.
Stargate SG-1 gradually evolves the basic premise of the Stargate film into its own unique mythological superstructure, expanding upon Egyptian mythology (notably the gods Apep/Apophis and Anubis as Goa'uld villains), Norse mythology (notably the god Thor as an Asgard ally) and Arthurian legend (notably Merlin as an Ancient ally against the god-like Ori), among others.
SG-1 introduces new alien races (as opposed to alien human civilizations) less often than other science fiction television series and integrates newly encountered races or visited planets in stand-alone episodes into its established mythology while leaving the plotlines accessible for new audience members.
Despite the show's extensive intergalactic mythology and science fiction elements, scholar M. Keith Booker considered SG-1 ultimately character-driven and heavily dependent on the camaraderie among the SG-1 members.

The producers embraced humor and wanted SG-1 to be a fun show that did not take itself too seriously.
Brad Wright regarded SG-1 as a family show with adequate violence as opposed to random or gratuitous violence.
Christopher Judge did not consider SG-1 as a "message show by any stretch of the imagination, but occasionally there are messages there".
Aimed at a popular audience, Stargate SG-1 emphasized its present-day-Earth story frame by frequently referencing popular culture, like The X-Files and Buffy the Vampire Slayer had done before.
Jonathan Glassner had written The Wizard of Oz references into his own scripts since the first season, which the other writers imitated after Richard Dean Anderson began referencing the film on his own.
O'Neill references Richard Dean Anderson's favorite television series, The Simpsons, throughout the show.
SG-1 makes meta-textual references to the process of writing and filming a science fiction TV series in several episodes and alludes to the main actors' previous TV roles in the pilot episode (Carter: "It took us fifteen years and three supercomputers to MacGyver a system for the gate on Earth") and in a Farscape vignette in the milestone episode "200".
Stargate SG-1 takes place in a military science fiction environment and employs the common science fiction concepts of strongly differentiated characters fighting an unequivocally evil enemy (the Goa'uld). However, it links alien races with well-known Earth mythologies, by use of the central Stargate device. Near-instantaneous interplanetary travel allows quick narrative shifts between the politics on Earth and the realities of fighting an interstellar war. Stargate SG-1 gradually evolves the basic premise of the Stargate film into its own unique mythological superstructure, expanding upon Egyptian mythology (notably the gods Apep/Apophis and Anubis as Goa'uld villains), Norse mythology (notably the god Thor as an Asgard ally) and Arthurian legend (notably Merlin as an Ancient ally against the god-like Ori), among others. SG-1 introduces new alien races (as opposed to alien human civilizations) less often than other science fiction television series and integrates newly encountered races or visited planets in stand-alone episodes into its established mythology while leaving the plotlines accessible for new audience members. Despite the show's extensive intergalactic mythology and science fiction elements, scholar M. Keith Booker considered SG-1 ultimately character-driven and heavily dependent on the camaraderie among the SG-1 members.
The producers embraced humor and wanted SG-1 to be a fun show that did not take itself too seriously. Brad Wright regarded SG-1 as a family show with adequate violence as opposed to random or gratuitous violence. Christopher Judge did not consider SG-1 as a "message show by any stretch of the imagination, but occasionally there are messages there". Aimed at a popular audience, Stargate SG-1 emphasized its present-day-Earth story frame by frequently referencing popular culture, like The X-Files and Buffy the Vampire Slayer had done before. Jonathan Glassner had written The Wizard of Oz references into his own scripts since the first season, which the other writers imitated after Richard Dean Anderson began referencing the film on his own. O'Neill references Richard Dean Anderson's favorite television series, The Simpsons, throughout the show. SG-1 makes meta-textual references to the process of writing and filming a science fiction TV series in several episodes and alludes to the main actors' previous TV roles in the pilot episode (Carter: "It took us fifteen years and three supercomputers to MacGyver a system for the gate on Earth") and in a Farscape vignette in the milestone episode "200".
Stargate SG-1