10 Sci-Fi Horror Movies That Are Truly Terrifying

The sci-fi genre is the perfect platform for terrifying horror stories, and the best movies are memorable for exploiting our fears of the unknown. Alien threats are among the most iconic creatures in cinema, but the genre isn’t strictly limited to them for scares. Journeys into space can be perilous, and equally scary without a supernatural threat.

Movies have covered sci-fi horror in plenty of flavors, from vile creatures to spacefaring adventures gone wrong. Many are set in the future, but others are set in the present day, which often makes the story much more relatable.

If you’re a fan of the sci-fi horror genre, you’re already familiar with the classics. Ridley Scott’s phenomenal Alien series is still going strong after more than 40 years. Countless movies offer their own unique takes on alien life, proving that creatures don’t necessarily need acid blood to stay with you long after you turn off the film.

Other greats in the genre place their scares in the journey itself. Voyages away from Earth can be filled with wonder. They can also create oddly relatable scenarios when adventures millions of miles away from home end in disaster.

Directors are always coming up with fresh takes in the sci-fi genre. Whether you’re a fan of creature features or disaster movies, here’s a selection of terrifying sci-fi horror films that do their best to keep you up at night.

10

Color Out Of Space (2019)

Color Out of Space is a remarkable sci-fi horror movie set on an isolated US farm. A strange meteorite lands nearby and starts pulsing with a strange color. The event starts to have disturbing effects on the livestock and even on the family living on the farm.

Nicolas Cage plays Nathan, the father in a family of four. He notices things are starting to go wrong, and they quickly go from bad to worse. Color Out of Space doesn’t rely on jump scares and instead uses disturbing body horror and wild imagery.

Color Out of Space is based on a story by H.P. Lovecraft. Cage plays a surprisingly grounded role, and it’s hard not to feel for the family as they descend into madness.

9

The Fourth Kind (2009)

The Fourth Kind is a terrifying alien-abduction movie shot in a faux-documentary style. Milla Jovovich stars as Abbey Tyler, a psychologist specializing in hypnotherapy. She believes something sinister may be happening when multiple of her clients describe having the same recurring dreams.

Tyler researches the phenomenon, uncovering several pieces of disturbing evidence indicating abductions. She tries to convince the sheriff (Will Patton) of her findings, but he’s reluctant to believe her owing to her troubled past.

The Fourth Kind contains some genuinely scary moments. It also explores Tyler’s trauma, leaving the audience to decide if her accounts are believable or not.

8

Europa Report (2013)

Europa Report is a sci-fi thriller shot in a found-footage style, primarily using static cameras around the spaceship to tell the story. The movie tells the tale of an international team of astronauts on a privately funded voyage to Europa, one of Jupiter’s largest moons.

The crew hopes to find life deep under the ice. They find something, but it’s entirely different from the average creature in a sci-fi horror movie.

Europa Report makes the list because it feels genuine. The movie offers a refreshingly grounded take on space travel, which makes the disastrous events hit so much harder.

7

Life (2017)

Life offers audiences a modern take on the classic alien-creature-feature formula. Researchers on board the International Space Station recover a tiny alien life form, confirming that humans are not alone in the universe.

The crew names the organism Calvin, but the whimsical journey of discovery takes a dark turn when it turns on the crew. Calvin is a terrifying creature with unknown strength. It rapidly grows and thwarts the crew’s best efforts to eliminate it.

Life is arguably an underrated alien movie. It features an all-star cast, including Ryan Reynolds in a far more serious role than many fans are used to. Naturally, the team of trained scientists makes some questionable decisions, but the film remains believable with a superb ending.

6

Pandorum (2009)

Pandorum stars Dennis Quaid as Payton and Ben Foster as Bower, two people who wake up onboard the vast Elysium spacecraft with no clue how they got there.

The pair is suffering from memory loss and begins exploring the labyrinthine ship. Payton and Bower quickly realize that they aren’t alone, and the ship is crawling with vicious humanoid creatures.

The monsters on board the ship are certainly scary, but Pandorum is also a sci-fi mystery movie, as Payton and Bower piece together what is happening. Critics were not kind to Christian Alvart’s spacefaring horror movie in 2009, but it has since garnered a cult following.

5

Sunshine (2007)

Credit: INSTAR

Sunshine is an exceptional sci-fi epic that’s part space disaster film and part sci-fi horror. The movie is set in the not-too-distant future, when scientists realize that our sun is dying. The crew of Icarus II sets out on a monumental journey to reignite the sun using a massive ‘Stellar Bomb.’

The all-star cast includes Cillian Murphy as Capa and Chris Evans as Mace. Their mission appears to be going smoothly until they stumble across a distress signal from a ship called Icarus I, a spacecraft that attempted the same mission years prior.

Sunshine contains several grisly deaths and disturbing imagery, but it’s more than that. The concept itself is frightening, and the movie delivers palpable stakes, with the fate of humanity hanging in the balance.

4

Fire In The Sky (1993)

Fire in the Sky is an alien abduction movie made particularly chilling as it’s based on a real, alleged encounter. The movie focuses on Travis Walton (D. B. Sweeney), a lumberjack in Arizona. He leaves work with his colleagues one night and is abducted as his friends flee.

The police accuse Travis’ friends of foul play. He reappears days later with a horrifyingly detailed account of what happened when he vanished. Fire in the Sky also offers a particularly graphic depiction of the abduction.

The film doesn’t rely on jump scares, but remains terrifying because it feels so real. Travis is just a regular person, and his plight is believable, as is the police and public’s reaction to the group’s story.

3

The Thing (1982)

The Thing is a classic sci-fi horror movie set on a frigid research station in Antarctica. Scientists at the site recover a dog from outside, unaware that it’s actually a deadly life form that can perfectly imitate any living thing.

The movie stars Kurt Russell as MacReady, a helicopter pilot at the facility. He unwillingly becomes the de facto leader of the survivors as they face a threat that can masquerade as almost anything, even them.

John Carpenter’s renowned movie isn’t afraid to show off the creature, and its reliance on practical effects makes The Thing still hold up remarkably well today. It’s a beloved horror classic for a reason, detailing a terrifying threat and the paranoia among the group.

2

Event Horizon (1997)

Event Horizon is an exceptional sci-fi horror movie with an incredible cast and a terrifying premise. Miller (Laurence Fishburne) is the captain of the Lewis and Clark spacecraft. He takes his crew into deep space with a new passenger on board, Doctor Wier (Sam Niell).

Wier explains that scientists found a distress signal from the Event Horizon. It’s an advanced ship powered by black hole technology that mysteriously vanished years earlier. Miller’s crew investigates, but it quickly becomes clear that something went horribly wrong on board.

Event Horizon is uniquely scary. We don’t know where the ship has been, or what it’s capable of, which makes it more intimidating than most alien threats. The spacecraft assaults its occupants with traumatic visions, leading to some of the most shocking deaths in the genre.

1

Alien (1979)

Many movie fans knew this was coming, but Ridley Scott’s Alien takes the top spot on this terrifying sci-fi horror list. It’s among the most influential movies of all time, transcending the sci-fi and horror genres.

Sigourney Weaver is Ellen Ripley, the Warrant Officer of the Nostromo spacecraft. Her crew responds to a mysterious distress signal, and one of her colleagues is attacked by a horrific alien life form. The crew brings the creature on board, and events quickly go from bad to worse.

Several movies from the Alien franchise could have made the list, but the reveal of the Xenomorph in the original movie is one of the most iconic scenes in cinema. The alien is genuinely terrifying to this day, and its impact on audiences at the time cannot be understated.

Since 1979, countless sci-fi and horror movies have borrowed ideas from Alien. The buildup is second-to-none, and the creature only grows more horrific through time. If you’re a fan of sci-fi or horror movies, the original Alien movie is essential viewing, and you’ll quickly spot its DNA in other projects.