51 poster

If You Liked 51, Watch These Next

Finished 51 (2011) and want more of the same? These 20 movies are what its fans watched next, ranked by how often people who liked it also liked these. Like 51, most of them are science fiction, horror.

Everything on this page has a home release and plays right here on Rotten Brains — pick one and press play. No sign-up, and a free account only adds resume and history.

20 titles · updated 2nd October 2026

  1. The X-Files poster

    1.The X-Files(1998)

    6.9MysteryScience FictionThrillerAlso science fiction

    Mulder and Scully, now taken off the FBI's X Files cases, must find a way to fight the shadowy elements of the government to find out the truth about a conspiracy that might mean the alien colonization of Earth.

    Watch now
  2. Osiris poster

    2.Osiris(2025)

    6.1Science FictionActionHorrorAlso science fiction and horror

    Special Forces commandos on a mission are abducted mid-operation by a mysterious spacecraft. Upon waking aboard, they find themselves prey to a relentless alien race in a fight for survival.

    Watch now
  3. Die Alone poster

    3.Die Alone(2024)

    6.4HorrorThrillerScience FictionAlso horror and science fiction

    Lost in a world reclaimed by nature and overrun by mysterious creatures, Ethan, a young man with amnesia navigates the dangerous landscape in search of his lost love Emma. His journey takes an unexpected turn when he encounters Mae, a hardened and eccentric survivor. Together, Ethan and Mae face threats both human…

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  4. Rage of Stars poster

    4.Rage of Stars(2026)

    6.6ActionScience FictionThrillerAlso science fiction

    A story about a woman from the International Special Forces Unit, who has a premonition about the impending end of humanity.

    Watch now
  5. Monolith poster

    5.Monolith(2023)

    6.1HorrorMysteryScience FictionAlso horror and science fiction

    A desperate young journalist turns to podcasting to salvage her career, but her rush to make headlines leads her to an alien conspiracy.

    Watch now
  6. Phoenix Forgotten poster

    6.Phoenix Forgotten(2017)

    6.3HorrorMysteryScience FictionAlso horror and science fiction

    Twenty years after three teenagers disappeared in the wake of mysterious lights appearing above Phoenix, Arizona, unseen footage from that night has been discovered, chronicling the final hours of their fateful expedition.

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  7. Books of Blood poster

    7.Books of Blood(2020)

    6.3HorrorScience FictionAlso horror and science fiction

    A journey into uncharted and forbidden territory through three tales tangled in space and time.

    Watch now
  8. Impostor poster

    8.Impostor(2001)

    6.1ActionScience FictionThrillerAlso science fiction

    A top-secret government weapons designer is arrested by a clandestine government organization on suspicion of being a clone created by the hostile alien race wanting to take over Earth.

    Watch now
  9. Alien Nation poster

    9.Alien Nation(1988)

    6.1Science FictionCrimeThrillerAlso science fiction

    A few years from now, Earth will have the first contact with an alien civilization. These aliens, known as Newcomers, slowly begin to be integrated into human society after years of quarantine.

    Watch now
  10. Margaux poster

    10.Margaux(2022)

    5.9HorrorScience FictionAlso horror and science fiction

    As a group of seniors celebrate their final college days at a smart house, the house's highly advanced AI system, Margaux, begins to take on a deadly presence of her own. A carefree weekend of partying turns into a dystopian nightmare as they realize Margaux's plans to eliminate her tenants one way or another. Time…

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  11. Spectral poster

    11.Spectral(2016)

    6.6Science FictionThrillerActionAlso science fiction

    A special-ops team is dispatched to fight supernatural beings that have taken over a European city.

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  12. Occupation: Rainfall poster

    12.Occupation: Rainfall(2020)

    6.2Science FictionActionAlso science fiction

    Two years into an intergalactic invasion of Earth, survivors in Sydney, Australia, fight back in a desperate ground war. As casualties mount by the day, the resistance and their unexpected allies, uncover a plot that could see the war come to a decisive end. With the Alien invaders hell-bent on making earth their new…

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  13. Monsters of Man poster

    13.Monsters of Man(2020)

    6.4Science FictionActionAlso science fiction

    A robotics company vying to win a lucrative military contract team up with a corrupt CIA agent to conduct an illegal live field test. They deploy four weaponized prototype robots into a suspected drug manufacturing camp in the Golden Triangle, assuming they'd be killing drug runners that no one would miss. Six…

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  14. Blood and Snow poster

    14.Blood and Snow(2023)

    6.2Science FictionHorrorAlso science fiction and horror

    When researchers rescue a fellow scientist who survived a meteorite strike in the Arctic, they discover she may not be who they think she is. Is she some-how changed?

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  15. Prometheus poster

    15.Prometheus(2012)

    6.6Science FictionMysteryHorrorAlso science fiction and horror

    A team of explorers discover a clue to the origins of mankind on Earth, leading them on a journey to the darkest corners of the universe. There, they must fight a terrifying battle to save the future of the human race.

    Watch now
  16. The Wave poster

    16.The Wave(2019)

    6.0Science FictionAlso science fiction

    A man on the verge of a promotion takes a mysterious hallucinogenic drug that begins to tear down his reality and expose his life for what it really is.

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  17. Serenity poster

    17.Serenity(2005)

    7.4Science FictionActionAdventureAlso science fiction

    A group of rebels travel the outskirts of space evading the sinister Alliance regime. Their lives of smuggling and cargo-running are interrupted by a psychic passenger who harbours a dangerous secret. Soon, the crew find themselves being pursued by an Alliance agent who will stop at nothing to find them.

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  18. Frankenstein Unbound poster

    18.Frankenstein Unbound(1990)

    5.9HorrorScience FictionAlso horror and science fiction

    The ultimate weapon, claimed to be safe for mankind, produces global side-effects including time slides and disappearances. The scientist behind the project and his car are zapped from the year 2031 to 1817 in Switzerland where he meets Dr. Victor Frankenstein, Mary Shelley and others.

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  19. Alien: Romulus poster

    19.Alien: Romulus(2024)

    7.2HorrorScience FictionAlso horror and science fiction

    While scavenging the deep ends of a derelict space station, a group of young space colonizers come face to face with the most terrifying life form in the universe.

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  20. The X-Files: I Want to Believe poster

    20.The X-Files: I Want to Believe(2008)

    5.9MysteryScience FictionThrillerAlso science fiction

    Mulder and Scully are called back to duty by the FBI when a former priest claims to be receiving psychic visions pertaining to a kidnapped agent.

    Watch now