10 Awesome Horror Films That Didn't Rely On CGI

10. Slither

A lot of films on this list pay homage to classic horror films of the 70s and 80s, and James Gunn's gory monster flick is no exception. Everything from David Cronenberg's They Came From Within to Fred Dekker's underrated Night of the Creeps is lovingly referenced.

As a result, the plot is hardly original, but the creature design certainly is. After a meteor crashes and infects a never-better Michael Rooker with an alien slug that craves raw meat, he sets about wreaking havoc on the small town as he begins to grotesquely transform into a monstrous, tentacled creature.

From a woman force-fed meat until she's a giant ball of flesh to Rooker disemboweling a local policeman with the swipe of a tentacle, nothing is off the table. Years before Gunn made the leap to the MCU and fresh out of the Troma school of film, Slither has the kind of tongue-in-cheek fun genre fans can get behind. And the impetus is very much on more practical than digitally faked effects.