"Alien" has always been, first and foremost, a horror franchise. The science fiction aspect of the film may shine brighter for those of us more inclined to that particular genre (guilty), but the suspense, scares, and monsters loom larger than the extensive sci-fi worldbuilding, which tends to occupy the background of the movies more than the foreground. Perhaps the reason why Ridley Scott's "Prometheus" split the fan base so significantly is because it brought the more sci-fi storylines like synthetic consciousness, corporate politics, and ancient aliens to the forefront.
FX's new series "Alien: Earth" does that as well, with the meat of its story focusing on androids, cyborgs, and the experimental "hybrids" of the Prodigy corporation . Scares still play a key role, but it isn't until