Who published a video game based on characters from a movie that Sigourney Weaver was in? 
Aliens versus Predator 2: Aliens versus Predator 2 is a science fiction first-person shooter video game developed by Monolith Productions and published by Sierra Entertainment for Microsoft Windows in 2001, and for Mac OS X in 2003. Alien (franchise): Alien is a British-American science-fiction horror media franchise centered on the film series depicting Warrant Officer Ellen Ripley (played by Sigourney Weaver) and her battles with an extraterrestrial lifeform, commonly referred to as "the Alien", and depicting android David 8 (portrayed by Michael Fassbender) and his experimentation in creating said lifeform.
i don't know