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16+ Best Cosmic Horror Movies You Should Watch Online in 2020 [Most Realistic Scary Films]


Coined by the popular, weird horror fiction writer H.P Lovecraft, cosmic horror is, “the fundamental premise that common human laws and interests and emotions have no validity or significance in the vast cosmos-at-large.”

However, the nail-biting genre encompasses a lot more. From mortals turning to monsters, to spirits reclaiming their curses – the perils are endless, and the fear never-ending. Over the years, the film industry has tried to come up with masterpieces to make the human brain bend by doing their best to graphically represent a series of unexplainable, mystifying events.

Suggested:The Best Horror movies to watch on Amazon Prime

Best Cosmic Horror Movies In Hollywood To Watch

And let’s be honest, we’re never tired of watching a horror movie, especially if it’s otherworldly. So grab your popcorn and skim through this list of the 17 best cosmic horror films ever made in Hollywood.

1. Alien (1979)

  • Genre:Horror/Sci-fi
  • IMDb Rating:8.4/10
  • Available On:Amazon Prime, Youtube, Netflix, Vudu, Msn, Fandango Now, Google Play, Apple TV, MoviesAnywhere, Best Buy


  • Tom Skerritt
  • Sigourney Weaver
  • Veronica Cartwright
  • Harry Dean Stanton
  • Ian Holm
  • Yaphet Kotto
  • Bolaji Badejo

Plot:Nostromo, the crew operating the commercial starships awakens from their cryo-sleep capsules. They had a distressed alien call them, crying out for help. They had completed only half of their journey towards their home in deep space when they woke up from their sleep.

The cosmic terrors of space start to befall the team when they come across a nest of eggs right inside their ship. A creature leaps out and gets stuck to a crew member, which makes him go into a coma.

watch it now

2. Aliens (1986)

  • Genre:Sci-fi/Action
  • IMDb Rating:8.3/10
  • Available On:Amazon Prime, Youtube, Netflix, Hulu


  • Sigourney Weaver
  • Carrie Henn
  • Michael Biehn
  • Paul Reiser
  • Lance Henriksen
  • Bill Paxton
  • William Hope

Plot:After a tiresome, on-the-edge space journey for 57 years, the spaceship of Lt. Ripley (played by Sigourney Weaver) is suddenly identified by a deep-space rescue crew. When they arrive at LV-426, they come across a 9-year-old little girl called Newt, who was the only one that managed to survive.

Gazillions of aliens have invaded the colony, and suddenly the crew realizes that even their war-toughened selves cannot keep up with their enemy.

watch it now

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3. The Thing (1982)

  • Genre:Horror/Sci-fi
  • IMDb Rating:8.1/10
  • Available On:Amazon Prime, Youtube, Starz, iTunes, Vudu, Google Play


  • Kurt Russell
  • A. Wilford Brimley
  • T. K. Carter
  • David Clennon
  • Keith David
  • Richard Dysart
  • Charles Hallahan

Plot:A team of American scientists finds themselves in the unpopulated, outskirts of Antarctica, trying to complete research. A huge commotion awakes at their base camp when they see a copter trying to shoot a sledge dog. They give shelter to the dog to protect it, which only results in the helicopter mercilessly firing the men and the canines in the camp alike.

Soon, the team of scientists finds out that the dog can incarnate itself into the shape of its victims. An incentive copter pilot (played by Kurt Russell) and a camp doctor (played by Richard Dysart) guide the helpless crew to combat the creature and escape the dire straits; before it kills them all.

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4. Evil Dead II (1987)

  • Genre:Horror/Comedy
  • IMDb Rating:7.8/10
  • Available On:Amazon Prime, iTunes


  • Bruce Campbell
  • Sarah Berry
  • Dan Hicks
  • Kassie Wesley DePaiva
  • Ted Raim
  • John Peakes
  • Denise Bixler

Plot:Release as the second sequel of a series consisting of three films, the Evil Dead is the most horrifyingly comical series one can ever come across. It revolves around the main character, Ash, who battles horrendous demons in an isolated cabin in a forest.

He discovers an audiotape that was made by a university professor, that contains a narration of specific excerpts from the Book of Evil. Linda, who was Ash’s girlfriend, soon gets overpowered by the awakened spirits as they possess her, and starts to act erratically. To Ash’s great horror, he realizes that they cannot escape the woods whatsoever.

watch it now

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5. The Fly (1986)

  • Genre:Horror/Sci-fi
  • IMDb Rating:7.6/10
  • Available On:Amazon Prime, Hulu, iTunes


  • Jeff Goldblum
  • Geena Davis
  • John Getz
  • Joy Boushel
  • Les Carlson
  • George Chuvalo
  • Michael Copeman

Plot:The acclaimed scientist Seth Brundle is soon seen to have completed his teleportation device. After its completion, he makes an impulsive decision to try it first on himself. Oblivious of the fact that a housefly has slipped while he was in the process, the whole thing suddenly leads to a combined teston man and insect.

For the initial part, it appears as if Brundle underwent successful teleportation. However, gradually, the fly’s cells start to formulate on the insides of his body. As he slowly changes into a humanoid form of a fly, his girlfriend (played by Geena Davis) is petrified seeing her love turn into a perilous monster.

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6. The Evil Dead (1981)

  • Genre:Horror/Fantasy
  • IMDb Rating:7.5/10
  • Available On:Amazon Prime, Youtube, Netflix, Msn


  • Bruce Campbell
  • Ellen Sandweiss
  • Betsy Baker
  • Hal Delrich
  • Sarah York
  • Richard DeManincor
  • Theresa Tilly

Plot:The main protagonist of the movie named Ash, finds himself teleported to the gothic age. Here he becomes the captive of Lord Arthur, who was feared and dreaded by all. All Ash had to help himself out was a chainsaw, which became his only constant partner.

Ash is soon commanded to go on a deadly mission to find and bring back the Book of Dead. The movie revolves around the perilous journey Ash goes through to revive a book that gives its owner the supernatural power to summon ghouls. This movie is available to stream on youtube.

watch it now

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7. Possession (1981)

  • Genre:Horror/Drama
  • IMDb Rating:7.4/10
  • Available On:Amazon Prime, Msn, Google Play


  • Isabelle Adjani
  • Sam Neill
  • Heinz Bennent
  • Margit Carstensen
  • Michael Hogben
  • Shaun Lawton
  • Johanna Hofer

Plot:Anna tells her husband that she is having an extramarital affair, and permanently abandons him and their son. Mark finds himself unable to wrap his head around it all and confronts Heinrich, the one with whom her ex-wife was having an affair with. Heinrich brutally beats up Mark, leaving him all the more helpless. After a series of conflicts and abusive episodes between them, Mark appoints an investigator to get to the root cause of the matter.

All of this makes Anna gradually turn into a madwoman, exhibiting irrational, psychotic behaviour. The movie takes a shocking turn when it is revealed that Anna has a much bigger, petrifying secret that none knew about.

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8. In The Mouth Of Madness (1994)

  • Genre:Horror/Psychological Thriller
  • IMDb Rating:7.2/10
  • Available On:Amazon Prime, Netflix


  • Sam Neill
  • Jürgen Prochnow
  • Julie Carmen
  • Charlton Heston
  • David Warner
  • John Glover
  • Bernie Casey

Plot:A fine novelist who specializes in writing horror pieces, Sutter Cane goes missing-in-action, his publisher Jackson Harglow immediately makes a claim. John Trent (played by Sam Neil) was an insurance investigator, who was asked to inquire about the claim and the case. He sets out on a venture to revive an age-old manuscript, and locate the writer’s whereabouts. Linda Styles, his editor, decides to go on this journey along with him.

Trent gets horrible nightmares after reading Cane’s works, and the movie takes an unexpected twist when he sets out on a mysterious, secret night trek to a paranormal town in New Hampshire.

watch it now

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9. The Call Of Cthulhu (2005)

  • Genre:Horror/Mystery
  • IMDb Rating:7.2/10
  • Available On:Amazon Prime, Google Play, Netflix


  • Matt Foyer
  • John Bolen
  • Ralph Lucas
  • Chad Fifer
  • Susan Zucker
  • Kalafatic Poole
  • John Klemantaski

Plot:The main character of this movie is played by Matt Foyer, who narrates all the hardships that led to his downfall to his therapist. It all started by his uncle’s bedstead when he was handed over the keys to his uncle’s locked, confidential papers. Upon reading, he learns about the underwater god, Cthulhu, and the cult that was formed around him.

The movie is kind of similar to a documentary and reveals about all the people who ever had any contact with the deity of the underwater, Cthulhu.

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10. The Mist (2007)

  • Genre:Horror/Sci-fi
  • IMDb Rating:7.1/10
  • Available On:Amazon Prime, Netflix, Google Play, iTunes


  • Thomas Jane
  • Marcia Gay Harden
  • Laurie Holden
  • Andre Braugher
  • Toby Jones
  • William Sadler
  • Jeffrey DeMunn

Plot:David Drayton’s home in Maine reduces to shambles after a powerful storm strikes the city. He and his son venture out to the city to haul some food supplies to survive. Suddenly, a white, thick mist drapes the whole town, and Drayton and his son find themselves trapped in the local grocery shop.

To everyone’s horror; horrendous, mystifying creatures start to appear. But that stands nowhere to the level of threat posed within, where a maniac (played by Marcia Gay Harden) calls for slaughter.

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watch it now

11. The Cabin In The Woods (2011)

  • Genre:Horror/Comedy
  • IMDb Rating:7/10
  • Available On:Amazon Prime, Netflix


  • Kristen Connolly
  • Chris Hemsworth
  • Anna Hutchison
  • Fran Kranz
  • Jesse Williams
  • Richard Jenkins
  • Bradley Whitford

Plot:Five college friends (played by Kristen Connolly, Chris Hemsworth, Anna Hutchison, Fran Kranz, Jesse Williams) set out on an exploration journey. When they find themselves in an isolated, remote forest, they are exposed to unimaginable horrors and paranormal activities. Soon, all of them start to fall prey to the ghastly zombies one by one.

The twist kicks in when it is found that two acclaimed scientists (played by Richard Jenkins, Bradley Whitford) are behind all the ghoul-ish happenings and that there’s a much bigger mystery behind it all than what meets the eye. This movie is available to stream on Netflix & Amazon Prime.

watch it now

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12. It (2017)

  • Genre:Horror/Thriller
  • IMDb Rating:7.3/10
  • Available On:Amazon Prime, Youtube, Vudu, Msn, Fandango Now, iTunes, Netflix


  • Jaeden Lieberher
  • Bill Skarsgård
  • Jeremy Ray Taylor
  • Sophia Lillis
  • Finn Wolfhard
  • Wyatt Oleff
  • Chosen Jacobs

Plot:During a seemingly pleasant summer in Derry, Maine; seven children who were outcasts face their worst fear when they come across a shape-shifting devil who comes out from the sewage drain every 27 years to hunt down the young children of the town.

The kids decide to join forces to fight their horrors and deep-seated fears. The movie progresses as it shows the journey of each kid, and how they put up a strong fight to take down the homicidal, petrifying clown called Pennywise.

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13. The Haunted Palace (1963)

  • Genre:Horror/Adaption
  • IMDb Rating:6.8/10
  • Available On:Amazon Prime


  • Vincent Price
  • Debra Paget
  • Lon Chaney
  • Creighton Chaney
  • Frank Maxwell
  • Leo Gordon
  • Elisha Cook

Plot:Castigated sorcerer Joseph Curwen (played by Vincent Price) casts an evil spell on a village before he is burned to death. After more than a hundred years, Curwen’s great-great-grandson decides to stay in his old manor. The caretaker of the mansion, Simon Orne (played by Lon Chaney Jr.) helps the couple – Charles and his wife Ann (played by Debra Paget) in settling down and getting accustomed to their new abode.

Curwen’s time-worn curse takes over him, which awakens a slumbering, devilish side to him which possesses him completely – giving rise to a trail of terrifying events.

watch it now

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14. From Beyond (1986)

  • Genre:Horror/Sci-fi
  • IMDb Rating:6.7/10
  • Available On:Amazon Prime, Vudu


  • Jeffrey Combs
  • Barbara Crampton
  • Ted Sorel
  • Ken Foree
  • Carolyn Purdy-Gordon
  • Bunny Summers
  • Bruce McGuire

Plot:The brainiac scientist Dr Pretorius (played by Ted Sorel) with an obsessive nature manages to find a way to access a parallel universe of pleasure by touching the brain’s pineal gland. After his ‘supposed’ murder by the squadron of the other world, everyone starts accusing his assistant Dr Crawford Tillinghast (played by Jeffrey Combs) for his murder.

Soon, the case is taken up by a psychiatrist-detective duo, Katherine McMichaels (played by Barbara Crampton) and Bubba Brownlee (played Ken Foree). They eventually realize that the case can’t be solved without them risking to go to the other world.

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15. Prince Of Darkness (1987)

  • Genre:Horror/Supernatural
  • IMDb Rating:6.7/10
  • Available On:Amazon Prime, Netflix, iTunes, Vudu, Google Play, Msn


  • Donald Pleasence
  • Jameson Parker
  • Victor Wong
  • Lisa Blount
  • Dennis Dun
  • Susan Blanchard
  • Anne Howard

Plot:Exploring a worn down, old church cellar, a priest finds a mysterious glass container filled with slime. Struck with fright, he shows his newfound otherworldly vial to top scholars and scientists. They gradually find out that the slimy substance is nothing but the essence of Satan. When the liquid begins seeping out, it turns the scholars into zombie-like killers.

As the combat between mortals and monsters continues, a student named Kelly (played by Susan Blanchard) gets possessed by Satan after the liquid takes full control over her.

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16. The Endless (2017)

  • Genre:Horror/Drama/Fantasy
  • IMDb Rating:6.5/10
  • Available On:Amazon Prime, Netflix, Google Play


  • Aaron Moorhead
  • Justin Benson
  • Tate Ellington
  • Callie Hernandez
  • Lew Temple
  • Emily Montague
  • James Jordan

Plot:When the two brothers get an ambiguous message, it inspires them to pay a visit to the UFO death cult they bid goodbye to ten years ago. They hope to find the answers and closure that they’ve been yearning for decades.

In pursuit of it all, they are compelled to follow and consider the cult’s beliefs as mysterious happenings keep occurring around the camp. As the people start to prepare themselves for an upcoming, unknown horror; the two brothers try their best to uncover the hidden truths before their lives entangle with the cult forever.

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17. Absentia (2011)

  • Genre:Horror/Mystery
  • IMDb Rating:5.8/10
  • Available On:Amazon Prime, Netflix


  • Catherine Parker
  • Courtney Bell
  • Dave Levine
  • Justin Gordon
  • Katie Parker
  • Morgan Peter Brown
  • James Flanagan

Plot:Seven years after the disappearance of Daniel, who was Tricia’s husband, her sister Callie arrives to stay with her. As more and more the compelling pressure of declaring Daniel’s death as ‘dead in absentia’ builds up, Tricia tries to gather the pieces of her wrecked life together and finally get over her husband’s almost a decade long absence. Suddenly, Callie finds a menacing tunnel near their house.

It also starts to make sense when Callie links the previous mysterious disappearances, making her realize that Daniel’s death was unnatural. It might be possible that the ancient forces in the tunnel now want to prey on Callie and Tricia, and maybe Daniel is in a much more dire strait than mere death. This movie is available to stream on Amazon Prime.

watch it now

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FAQs About The Best Cosmic Horror Movies Online

1. How To Find Cosmic Horror Movies To Watch Online?

You can watch some of the best Cosmic Horror films on platforms like Netflix, Youtube, Amazon Prime, Hulu, HBO, and Disney+ Hotstar Etc. To find and watch the best cosmic horror flicks on platforms like Netflix or Amazon prime simply search for the desired movie you want to watch online and click on the watch now button.

2. What Are The Best Cosmic Horror Movies In Hollywood?

You can find a wide range of cosmic horror movies from old to the latest ones to watch online or download within the OTT app. Some of the best Cosmic horror films are:

  • It (2011)
  • The Call of Cthulhu (2005)
  • Aliens (1986)
  • The Thing (1982)
  • The Evil Dead (1981)

3. What Are The Best Cosmic Horror Movies On Netflix?

Some of the best cosmic horror flicks on Netflix to watch online are listed below:

  • Prince of Darkness (1987)
  • Absentia (2011)
  • The Endless (2017)

4. What Are The Best Cosmic Horror Movies On Amazon Prime?

Some of the best cosmic horror films on Amazon Prime to watch online are listed below:

  • The Mist (2007)
  • From Beyond (1986)
  • The Haunted Palace (1963)
  • The Cabin in the Woods (2011)

5. Is It Possible To Download The Best Cosmic Horror Movies Online?

Yes, it is possible to download Cosmic Horror movies on some of the OTT Platforms like Youtube, Netflix, Hulu. To download Cosmic Horror movies on Netflix or youtube follow these steps:

  • First of all, you need to take a monthly/annual subscription to any of these services.
  • Now, log in your Netflix or Youtube account and search for Cosmic Horror movies you want.
  • Click on the particular movie and use the “Download” or “Save Offline” option to download the movie within the app or website.

6. Can We Watch Cosmic Horror Movies Online For Free?

No, all of the Cosmic Horror films listed in this article are only available to watch on their respective OTT platforms, by taking paid monthly/annual subscription. or else you can just take the free one month trail to enjoy.

7. How Many Cosmic Horror Movies Are There On Amazon Prime?

Amazon Prime has plenty of horror movies available on its platform. It has some 50-100 best cosmic horror flcicks that you can enjoy anytime by sitting at home.

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These are sure to send a chill down your spines and get you crouched up in a corner. Let these movies take you for a ride through the unspeakable monstrosities and extraterrestrial events. We recommend you to prepare your heart for the jump scares, and your jaw for the wide drops!

Read:Latest Horror movie to watch on Netflix

Disclaimer (Important)

We don’t assist or promote any kind of piracy stuff or torrent websites here. Piracy of any authentic content material below Indian legislation is a punishable crime and we oppose this piracy. We are just providing legal information that is available on the internet. The content material that’s given above is simply to provide the wanted details about unlawful actions. We have only provided the official, legal links to watch movies on their respective OTT platforms. Its objective shouldn’t be at any time and in any solution to assist in piracy and morally unsuitable acts. So, we request our readers to please steer clear of such web sites and decide the precise manner or authorized websites for downloading the movies or webseries online.

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Cecilia Jones

Cecilia Jones- Cecilia Jones loves to write about movies, music, and the most popular and exciting news.

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