Stargate canon

There are three seperate Stargate universes:

Stargate, the movie canon
This is the universe depicted in the 1994 science-fiction film Stargate. Bill McCay's Stargate novels are set in this universe, but are not part of it. Currently, the original Stargate film is the only legitimate work set in this universe.

SG-1/Atlantis canon
This is the universe depicted in Stargate SG-1 and Stargate Atlantis and the universe covered in this wiki. This universe is based on the Stargate film, but there are some differences. The Stargate novels written by Ashley McConnell, Sabine C. Bauer, Julie Fortune, Sally Malcolm, Sonny Whitelaw, Holly Scott, Jaimie Duncan, Karen Miller, Martha Wells and James Swallow are set in this universe, but are not part of it.

Infinity canon
This is the universe depicted in Stargate Infinity, which is based on the universe depicted Stargate and Stargate SG-1, but, once again, there are differences.