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HBO might have prestige horror shows like IT: Welcome to Derry, and Apple might be packed full of new horror movies to rent, but don't ignore Tubi. It's a haunted attic of scary movies, provided you're willing to do a little digging through its intimidatingly massive library. From underappreciated slashers and deeply unsettling psychological thrillers to the sort of gloriously unhinged genre oddities that make you wonder how they ever got made, there's plenty lurking within the streamer’s catalogue. So, in the spirit of spooky season, we've done the digging for you and rounded up some of the best hidden horror gems you can stream on Tubi this Halloween 2026. Best of all? They're all completely free to watch.
Final Prayer (The Borderlands)
Three men walk into a creepy church. Not the start of a bad joke, but the premise of a slow-build, deeply unnerving little British movie involving the investigation of a reported miracle. At first, it seems like fairly standard found-footage fodder, but then a sheep is set on fire, the sound of a baby crying echoes through the church, and suddenly there's talk of old pagan rituals. Even then, there's no way you'll predict the ending, which I can still, unfortunately, vividly recall years after seeing it.
Sator
This documentary-style movie about one man's grandmother and the entity, Sator, that she speaks to is unsettling in the best way, and well worth a watch for that. What makes it even more compelling is the backstory behind it. Filmmaker Jordan Graham based the story around his own family history and a being called Sator that his real-life grandmother had spoken about throughout her life. That grandmother - June Peterson - who was suffering from dementia, appears in the movie, and her house was used as a location. Her condition meant that her lines were improvised, and it was through that process that Graham discovered his real family history had more in common with a horror movie than he had previously known, and his grandmother stopped being a cameo and became the movie's focus.
Blood Creek
Two words: zombie horse. If that doesn't convince you to watch this 2009 movie that somehow fell into obscurity, I don't know what will. Before they were Magneto and Superman, Michael Fassbender and Henry Cavill starred in a truly wild Joel Schumacher (The Lost Boys) movie that manages to pack Nazis, Norse magic, and drinking blood like Gatorade into its plot. It's occasionally tense, surprisingly nasty, and takes such big swings you'll chuckle at the sheer audacity of it all. Even better, Fassbender and Cavill approach it with absolute seriousness, which only makes it more fun.
Inside
This French pregnancy horror film isn't for everyone; in fact, it isn't for most people, but leaving it off the list would be criminal. When I tell you that the interior the title refers to is a woman's womb, you can start to see why this might not be one for family movie night. It's essentially a battle between two women over a baby, the only snag being that the baby is currently very much inside one of them. Béatrice Dalle plays the antagonist with terrifying gusto, and if you don't cover your eyes at least once during this, you deserve some sort of medal. The events of the film also take place on Christmas Eve, so technically, it's a holiday movie.
Await Further Instructions
Christmas is always an awkward time for dysfunctional families, but this British horror pic takes it to the next level when protagonist Nick, his parents, sister, brother-in-law, and grandfather end up trapped inside their home by an ominous black substance. A message broadcast through their television tells them they're contaminated, and as the television continues to direct their actions and share information about their supposed situation, things get way worse than an argument over who hogged all of the gravy.
Tubi's catalogue is constantly changing, but if you want to hold your own Halloween horror film festival this weekend, these movies are all currently available and well worth your time.
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