Happy Alien Day! Over the last decade, April 26th has been an official celebration of Ridley Scott's coveted horror franchise. Since 1979, when horror fans were introduced to Xenomorphs for the first time, there have been seven mainline films in the franchise. Nine if you include the Alien vs. Predator crossover films that aren't canon. Now, to help honor some of the genre's scariest monsters, Alien is getting a new apparel collection from Rucking Fotten.