Like all sci-fi films, Sci-Fi Horror movies depict incredible circumstances that are tied to scientific advancements or alien technology. They depict things that could happen, in the future or an alternate version of the present.
Often, these films toe the line between horror and action, and the distinguishing question is how much they seek to scare as well as thrill the viewer.
One of the best-loved films in this sub-genre is Ridley Scott’s 1979 Alien, a thrilling, claustrophobic monster movie that confines its action to a manned spaceship. Scott dials up the tension and dread until the titular Xenomorph makes a memorable entrance through the chest cavity of an unlucky crew member. Once the creature reaches full size, the film becomes a showdown between the alien and Sigourney Weaver’s Ellen Ripley, one of cinema’s great heroes.



