10 Truly Terrible Sci-Fi Horror Movies That Rip-Off Alien

Ridley Scott’s Alien has been so influential in the sci-fi genre — and the space horror genre in particular — that it has naturally spawned numerous rip-offs. From the general premise of astronauts being hunted down by parasitic alien lifeforms aboard a spacecraft to specific visual nods like the chest-busting Xenomorph, Alien has provided numerous tropes for subsequent sci-fi movies to draw upon. Even though the 1979 classic can be compared to pre-existing sci-fi and horror ventures like 1951’s The Thing From Another World, Scott’s deft direction and the mature performances of the terrific cast perfectly, and originally, complemented the movie’s groundbreaking special effects and Jerry Goldsmith’s iconic score.