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From slashers with heart-pounding jump scares to psychological horrors which leave behind a lingering sense of dread, the scariest movies of all time have been revealed for 2026.
Now in its seventh year, the Science of Scare Project measures people’s physiological response while watching horror films. Over several weeks each year, a 250-strong audience panel is subjected to some of the scariest English language releases ever with their heart rates tracked and monitored per each film.
The films are then given a total overall “Scare Score”, which combines how much the audience’s average heart was raised during the runtime compared to their average resting heart rate, the natural variation in time between heartbeats (the bigger the drop the stronger the stress) and their highest recorded heart rate, which signals the most scary, stressful or exciting moments of a film, such as jump scares.
Including Backrooms, Obsession, Hokum, and Insidious: Out of the Further, only five 2026 releases were able to crack to top fifty scariest films, with A24 horror Undertone named the most frightening film of the year so far.
Despite not ranking, Zach Cregger’s Resident Evil film delivered two record-breaking jump scares where heart-rates peaked at 134 BPM. The comedic tone of the latter portion of the adaptation played against it, however.
So if you’re looking to give yourself nightmares, here are 15 of the scariest horror films of all time according to the Science of Scare Project.
13. It Follows
Maika Monroe stars in It Follows, which proved to be a breakthrough role for the actress. It Follows is about a university student who finds herself being followed by a malevolent force after a sexual encounter with her new boyfriend, Hugh who is played by Jake Weary. The psychological horror was written and directed by David Robert Mitchell, and has become a cult favourite and a sequel — They Follow — started shooting earlier this year. It Follows has an overall Scare Score of 74, with heart-rates spiking at 96 BPM. | RADiUS-TWC / Northern Lights Films
14. The Dark and The Wicked
From writer and director Bryan Bertino, The Dark and The Wicked is a Southern Gothic horror about two siblings who encounter a demonic entity at their family farmhouse in Texas after a death in the family. Released in 2020, The Dark and The Wicked is the final film coming in at number 12 with a Scare Score of 74 out of 100. | Shudder
15. Descent
One of the few British horrors to make the list of scariest horror films ever is 2005’s The Descent. Directed by Neil Marshall, it follows a group of friends who enter an uncharted cave system. Their adventure quickly becomes a nightmare, however, when they become trapped inside and pursued by bloodthirsty predators. The Descent saw heart-rates spike at 121 BPM, earning a Scare Score of 74 overall. It is among the most significant horrors of the 2000s, and even received a sequel. | Pathé Distribution