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    10 underrated horror movies you can stream free this Halloween

    Home> Film & TV> News

    Published 13:14 31 Oct 2025 GMT

    10 underrated horror movies you can stream free this Halloween

    Spice up your spooky season with these hidden gems

    Ellie Kemp

    Ellie Kemp

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    Featured Image Credit: Anchor Bay Entertainment

    Topics: Amazon Prime, Film and TV, Horror, Netflix, Streaming, Halloween

    Ellie Kemp
    Ellie Kemp

    Ellie joined UNILAD in 2024, specialising in SEO and trending content. She moved from Reach PLC where she worked as a senior journalist at the UK’s largest regional news title, the Manchester Evening News. She also covered TV and entertainment for national brands including the Mirror, Star and Express. In her spare time, Ellie enjoys watching true crime documentaries and curating the perfect Spotify playlist.

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    @EllieKempOnline

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    Halloween’s finally here, and if you’re after a scare that’s a little out of the ordinary this year, we’ve got you covered.

    This year has been major for the horror genre; from Zach Cregger's Weapons dominating the box office, to Dave Franco and Alison Brie's Together and now the release of Emma Stone's Bugonia - to name just a few!

    It's safe to say that the genre is alive and still finding new ways to terrify us.

    But there are some underrated spooky gems we miss out on each year.

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    So to give you a thrill of a different kind, we've rounded up 10 of the most underrated horrors that you can stream now.

    Better yet, they're free to watch in the US with either a Netflix or Prime Video subscription or via free sites like Tubi and Flex.

    Here are our top picks...

    The Rental

    The Rental is Dave Franco's directorial debut (IFC Films)
    The Rental is Dave Franco's directorial debut (IFC Films)

    Featuring Bruce's Jeremy Allen White, 2020's The Rental follows two couples who rent a stunning beach house for a weekend getaway.

    But there's trouble in paradise when the friends suspect they're being spied on.

    And as their own secrets come to light, the mounting paranoia escalates, leading to violence and a disturbing revelation about the property’s true danger.

    Alison Brie, Dan Stevens, Sheila Vand and Toby Huss also star in Dave Franco's directorial debut.

    The Rental is streaming now on Hulu or AMC+ via Prime Video.

    The Invitation

    The Invitation (Drafthouse Films)
    The Invitation (Drafthouse Films)

    Six years after striking major success with Jennifer's Body, director Karyn Kusama returned with a slow-burn psychological horror called The Invitation.

    Labeled a 'hidden gem of atmospheric horror' by one Reddit user, people say the less you know about this chilling movie going into it, the better.

    In other words, skip the trailer to avoid a major climactic spoiler.

    Keeping it brief, The Invitation follows Will (Logan Marshall-Green), who is invited to a dinner party hosted by his ex-wife Eden (Tammy Blanchard) and her new husband David (Michiel Huisman).

    What begins as an awkward evening slowly turns hair-raising as Will suspects the couple have an ulterior motive for inviting him over.

    The Invitation is streaming now on Tubi.

    The Block Island Sound

    The Block Island Sound (Netflix)
    The Block Island Sound (Netflix)

    Dubbed 'completely unnerving in all the best ways' by viewers, The Block Island Sound is well worth your attention this Halloween.

    Set off the coast of Rhode Island, the cosmic horror follows a fisherman named Harry (Chris Sheffield) whose father starts acting strangely before dying under mysterious circumstances.

    As Harry’s behavior becomes increasingly erratic, his marine biologist sister returns home to investigate - and is deeply disturbed over what she discovers lurking beneath the ocean's surface.

    The Block Island Sound is streaming now on Netflix US.

    Frozen

    Frozen - no, not that one (Anchor Bay Entertainment)
    Frozen - no, not that one (Anchor Bay Entertainment)

    In my opinion, it's the most realistic thrillers that elicit the deepest fear.

    And that's why 2010's Frozen has stuck with me for literal years. Also, it's why you won't catch me taking to the mountains to ski anytime soon...

    From director Adam Green, the survival horror follows three friends who become stranded high up on a ski lift after the resort closes for the weekend.

    As freezing temperatures set in and no help arrives, they must battle the cold, their own fear, and the wild predators circling below.

    Frozen is streaming now on Plex in the US.

    Lake Mungo

    Lake Mungo (Arclight Films)
    Lake Mungo (Arclight Films)

    Blending found footage and mockumentary tropes, Lake Mungo follows a family grieving of their drowned teenage daughter, Alice Palmer (Talia Zucker).

    Mom June (Rosie Traynor), dad Russell (David Pledger) and their son Mathew (Martin Sharpe) uncover eerie footage which unravels some of Alice's unsettling secrets.

    Some even suggest she might still be alive in some sense, leading them to Lake Mungo.

    Rotten Tomatoes critics have called the Australian horror an 'under-appreciated, under-seen gem'.

    Lake Mungo is available to stream now on Tubi.

    Hell House LLC

    Hell House LLC (Terror Films)
    Hell House LLC (Terror Films)

    Hailed as 'found footage done right', Hell House LLC has made social media users feel 'genuinely uncomfortable'.

    Set five years after a mysterious tragedy at a Halloween haunted house attraction where fifteen people died, the movie follows a documentary crew as they investigate the event.

    And as they review the tapes, they uncover the horrifying truth behind what really happened inside the Hell House.

    From director Stephen Cognetti, it's the first of five Hell House LLC movies, having debuted in October 2015.

    Hell House LLC is streaming now on Prime Video.

    Saint Maud

    Saint Maud (Studio Canal)
    Saint Maud (Studio Canal)

    Saint Maud is a British horror that's haunted viewers long after its final credits rolled.

    From Love Lies Bleeding's Rose Glass, the 2019 psychological drama follows Maud (The Lord of the Rings: The Rings of Power's Morfydd Clark), a deeply religious hospice nurse who becomes obsessed with saving the soul of her dying patient, a former dancer named Amanda (Jennifer Ehle).

    As Maud’s faith spirals into fanaticism, her devotion turns dark and delusional, blurring the line between divine experience and mental breakdown.

    Fans over on Reddit reckon the flick deserves 'more love' and say it's among their top 10 horror favorites.

    Saint Maud is streaming now on Prime Video.

    Cam

    With horror extraordinaire Stephen King counting himself among Cam's fans, you know you're in for a wild ride.

    Starring Madeline Brewer, the movie follows a webcam model whose entire life is stolen by a doppelgänger overnight.

    Under the alias Lola_Lola, Alice keeps streaming - but it's not really her.

    All hell breaks loose when she attempts to find out who's behind the ruse.

    Cam is streaming now on Netflix.

    The Driller Killer

    The Driller Killer (Vipco/Arrow Video)
    The Driller Killer (Vipco/Arrow Video)

    A slasher so brutal it was once banned in the UK, The Driller Killer follows Reno Miller, a struggling artist living in New York City who becomes increasingly unhinged by financial stress, artistic frustration and the general chaos around him.

    As his mental state deteriorates, he begins roaming the city at night with a power drill.

    The Driller Killer is streaming for free now on Plex.

    The Outwaters

    The Outwaters (Cineverse Corp)
    The Outwaters (Cineverse Corp)

    The Outwaters is an experimental found-footage horror film written and directed by Robbie Banfitch.

    This 'fever dream from hell' follows a group of friends who travel to the Mojave Desert to shoot a music video, but their trip descends into chaos when they encounter strange sounds, flashes of light and disturbing, unexplainable phenomena.

    The Outwaters is streaming now on Prime Video.

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