The WonderCon crowd down in Anaheim today saw an exclusive extended trailer for Ridley Scott’s sci-fi epic Prometheus that was introduced by Scott, co-writer Damon Lindelof and stars Charlize Theron and Michael Fassbender. Fox is among the majors on the convention schedule looking to drum up support for its tentpoles — for the studio, that means Prometheus and Abraham Lincoln: Vampire Hunter. (Lindelof tweeted in the lead-up: “Abraham Lincoln can hunt vampires, but Ridley Scott can hunt Abraham Lincoln.”) Here’s the trailer, which has more than a few echoes of Scott’s Alien — certain to make fans of that iconic pic happy: