The Alien franchise has taken many forms. The original, Alien, was a relatively straightforward sci-fi horror movie. Aliens doubled down, flashing forward 57 years but still retaining badass protagonist Ellen Ripley. From then on, the franchise tried every sequel technique. There were immediate sequels (Alien 3) distant sequels (Alien: Resurrection), prequels (Prometheus), and even crossovers (Alien vs. Predator.)
