Left 4 Dead

Left 4 Dead is a video game series which served as the inspiration for Vermintude and Darktide, along with Space Marine: Deathwing. In it, you control one of 4 characters, either controlled by A.I. or other players, and try to escape through a Zombie Apocalypse campaign from one end of a map to another. The zombies are of the Infected variety, still technically alive, and have various Mutant subspecies called "Special Infected".