Prometheus utilized several marketing techniques to engage science fiction fans in the lead up to the film's release. Early stages involved leaking set photos and sneak previews online. Later, fans were given cards with a website address for the fictional Weyland Corporation featured in the film. The biggest push came from an extended trailer revealing another website with a password fans tried to crack through online debates. Throughout, the filmmakers left hints on social media to further involve fans in solving puzzles as part of a larger viral campaign building excitement and community around the film.