Stargate: Extinction

Stargate: Extinction is an unproduced film written by Joseph Mallozzi and Paul Mullie. It had been intended as the first spinoff film to the television series Stargate Atlantis, which was created by Brad Wright and Robert C. Cooper. The film would have been directed by Andy Mikita.

Mallozzi and Mullie began working on the story during production of Atlantis' fifth season in 2008 and completed their script in April 2009. The decline of the DVD market, bankruptcy of MGM and cancelation of spinoff series Stargate Universe were among the contributing factors that lead to the film being permanently shelved. In the years following the films shelving, parts of the story and pages from the script have been revealed by co-writer Joseph Mallozzi.

The story would have followed Atlantis and its expedition being forced to leave Earth and return to the Pegasus galaxy, when en route the ships wormhole drive fails, leaving them stranded. After detecting an anomaly, they go to investigate.