As our referenced quote states in SFMZ's Sci-Fi Subgenres A to Z feature, horror and and science fiction seem to go hand in hand. Horrific Sci-Fi is closely linked to the 'horror' genre, and while it's often bloody, science is crucial to each premise.
Horrific sci-fi in cinema is quite popular with examples too many to mention, but to name a few, there's Species, The Thing, Resident Evil, The Fly, Scanners, The Blob, Lifeforce, Event Horizon, and many, many more. Very few films fit this category as well as Ridley Scott's Alien. This film often appears in both Top Sci-fi and Top Horror Best of Lists.
Films such as zombie movies can be a toss up where they are sorted. Many zombies films are straight up horror with a minor element of sci-fi. For example, Night of the Living Dead 1968 has a line of dialogue regarding a returning probe from Venus carrying a virus that infected the dead. The rest of the film really has no science fiction aspects.
It's really a toss up whether they should be sorted in SFMZ's Horror section or our Horror Sci-Fi section. So I spread the wealth, you can see more zombie movies in SFMZ's Horror section.
For videogames, the same as film, too many examples to mention, but to name a few, there's Doom, Dead Space, Soma, System Shock, and The Hum Abductions. Resident Evil and Halo are a couple of game examples that migrated to film / television. Then there's examples of film migrating to video games such as Alien and Predator.
In literature, Sharman DiVono's novel Blood Moon, an entire lunar base goes slowly insane. Most examples of this subgenre are short stories, such as Michael Shea's "The Autopsy," Simon Ings's "The Wedding Party," and Terry Bisson's "Necronauts."
The fifties horror sci-fi films listed below are featured in SFMZ's Fifties Sci-Fi section.