Stargate Worlds (abbreviated as SGW) is a massively multiplayer online role-playing game (MMORPG) video game in-development by Cheyenne Mountain Entertainment (CME) (in association with Metro-Goldwyn-Mayer) (MGM) and published by FireSky for Microsoft Windows. It is the first video game installment in the Stargate universe series. The game`s setting is mainly borrowed from military science fiction series Stargate SG-1. The game will focus on a premise set around an ancient device called the "Stargate". The game details and estimated release date is not clear as of yet. The video game is currently undergoing closed beta testing.

The Stargate franchise has spawned other media including books, television series, films, and comic books. These supplements to the film and series trilogies comprise another universe than the series and the film, and have resulted in significant development of the series` fictional universe. These media kept the franchise going in the interim between the film and series trilogies. In 2006, both CME and MGM announced the release of video game set in the Stargate universe. In 2008, FireSky announced its participation in the process of releasing Stargate Worlds.

Stargate Worlds will be based on the popular science fiction show Stargate SG-1. Original plans were to run it in sync with the show, but the show was canceled in 2006, though at least three direct-to-DVD films are being made (one being based on Stargate Atlantis), continuing the storyline. The game will take place in the earlier seasons of the show, before the Atlantis expedition and before the Ori story arc. At release, the game will revolve around the Milky Way Galaxy during in the storyline of the ongoing conflict between the Tau`ri and the Goa`uld. Playable races as shown at this time will include Tau`ri, Goa`uld, Jaffa, and the Asgard. The combat will incorporate some elements that are familiar to players of first person shooters. Players will use an array of ranged weaponry of both earth and alien origin. Combat will emphasize tactics to defeat opponents both AI and human controlled. The AI is being designed to provide players a significant challenge.

In February, 2006 the production team behind Stargate Worlds and Cheyenne Mountain Entertainment (CME) launched the official web forum for the game. Later in March the same year they launched the official site for the video game. Later in 2007, Stargate Worlds along with Metro–Goldwyn–Mayer (MGM) created a Stargate franchise survey, the winners would win a signed Stargate Worlds poster by the entire production team behind the game. On September 20, 2008 the Stargate Worlds development team announced the creation of their own Youtube channel, entitled Inside Stargate Worlds. CME has posted on the Stargate Worlds website that the game was expected to be released at the last quarter of 2008, but has recently changed its website to reflect a 2009 release.[29] On January 4, 2008, a trailer for Stargate Worlds was released. On the same day, a sweepstakes was announced, of which the winner will have his or her likeness included in the game.