Does it have to be prose? Some of the most chilling long-form narratives I've read are in the form of detailed creepypasta image macros or 'found footage' style blogs with photos. Think 'Ted the Caver' or stories that blend text with fake news clippings and doctored images. These are usually hosted on personal blogs or Imgur albums. They're a multimedia experience that uses the internet's native formats to enhance the horror. They're free, immersive, and often wildly creative in how they use the medium itself to tell the story.
For audiobook versions, which are just another way to 'read' a full story, LibriVox is a volunteer project that offers free public domain audiobooks. Listening to a volunteer read Lovecraft or Poe has a charming, communal, sometimes creepy vibe.
The production quality isn't professional, but that can add to the atmosphere for certain stories. It's perfect for long walks where you want a classic horror tale unfolding in your ears.
Ever found yourself halfway through a classic like 'The Haunting of Hill House' and realized you're holding your breath? That's the quiet, architectural dread Shirley Jackson perfected. It's less about gore and more about the slow erosion of sanity within walls that seem to breathe. The terror is in what's suggested, not shown, making every creak of the floorboard a personal assault on your nerves. For psychological horror, it remains the blueprint because it understands that a mind doubting itself is the most terrifying place of all.
I'd argue some modern masters have taken that blueprint and built digital labyrinths. Paul Tremblay's 'A Head Full of Ghosts' weaponizes that uncertainty by filtering a possession story through the unreliable memory of a child and the cynical lens of pop culture blogs. You're never sure if it's supernatural or a devastating family breakdown, and that ambiguity lingers long after the last page.
It's the difference between a startling noise and the certainty that something is standing silently in your dark bedroom. One is a reaction; the other is a state of being. Long-form horror cultivates that state of being. It builds a world with its own rules—often cruel, illogical rules—and forces you to navigate it alongside the characters. The dread is ambient, environmental. You're not waiting for a scare; you're waiting for the other shoe to drop in a world where you've discovered there are far more than two shoes, and they're all covered in something unspeakable. The narrative length makes the abnormal feel normal, which is the most disorienting trick of all.
Check out the submissions for horror writing contests that accept longer pieces. The Shirley Jackson Award nominees, for example, often include novellas and novels that are masterclasses in psychological unease. Following the longlists and shortlists for awards like the Stoker or the August Derleth Award can provide a yearly curated list of quality, lengthy horror. These are works that have been vetted by critics and peers for their literary merit and effectiveness, so you're less likely to run into amateurish pacing or shallow characters. It's a reliable source for finding horror that takes its time to mess with your head.