From the terrifying cases in The X-Files to the horrifying Upside Down in Stranger Things, some sci-fi TV shows might as well be horror.

Sci-Fi The 50 Best Sci-Fi Movies Of The Last 50 Years Since 1974 we’ve gotten some seriously good sci-fi movies, including Alien , Predator , a couple of Blade Runners , and more.

Alien is a rare example of a movie that blends a perfect balance of sci-fi and horror, fitting squarely into both genres as one of the most brilliant and terrifying movies of all time.

The forgotten '80s zombie comedy Night of the Creeps is full of nods to horror classics, but still holds its own as an original undead flick.