The idea of being alone in a dark, abandoned asylum can be really terrifying. There are old medical equipment, scribbles on the walls, and the feeling that the patients' tortured souls still linger. A shapeshifting monster is another good one. It can take on different forms, like your loved ones, and then attack when you least expect it. Also, a story set during a blackout in a big city where there's something lurking in the darkness waiting to prey on the unsuspecting.
A story about a serial killer on the loose. You can build suspense by showing his perspective as he hunts his victims. The idea of a possessed person is also scary. They act in strange ways, their eyes change, and they can do things that are beyond human capabilities. And then there's the concept of a town with a dark secret. Everyone seems normal on the surface, but as the story unfolds, you discover the awful truth that has been hidden for years.
Another idea is a cursed object. For example, a beautiful antique mirror. Whoever looks into it starts to see a distorted version of themselves that slowly becomes more and more menacing. Then, bad things start to happen to them in real life - they get into accidents, lose their jobs, or their loved ones start to act strangely towards them as if they are being influenced by the mirror's curse.
One could write about a haunted school. The hallways are empty at night, but there are strange footsteps and the sound of a chalkboard being scratched. There might be the spirit of a former student or teacher who met a tragic end there. A possessed vehicle is also a cool idea. The car or truck seems to have a mind of its own, driving dangerously and leading the occupants to a terrifying destination. And a story about a cult that practices dark magic in a small, isolated community can be very spooky.
A story where testers are working on a new virtual reality horror game. During testing, the VR headset seems to show things that aren't in the game code. The testers start seeing shadowy figures approaching them in the virtual world. It might be a glitch in the system, or something more sinister from the deep coding. As they dig deeper into the problem, they find that the game might be tapping into some sort of otherworldly energy.
Some great ideas for interactive scary stories are stories that take place in a creepy old mansion with lots of locked rooms. The reader can pick which room to unlock first. A story about a serial killer on the loose in a small town is also good. The reader can decide how the main character tries to warn the town or hide from the killer. Additionally, a story set in an underground catacomb filled with ancient tombs. The reader can choose whether the character follows a strange noise or tries to find another way out.
One option is an old, abandoned hospital. The corridors are dimly lit, with flickering fluorescent lights. There are gurneys overturned, and medical equipment scattered everywhere. The smell of decay fills the air, and zombies in tattered hospital gowns wander the halls. Also, a cemetery at night can serve as a zombzie background. Gravestones are cracked and tilted, and the ground seems to shift as zombies claw their way out of their graves.
A great idea is a story about a cursed carnival. The main character is a visitor who gets trapped inside. As the story progresses, the reader can decide whether the character should ride the spooky rollercoaster or enter the fortune - teller's tent. Also, a story set in an old, abandoned graveyard where the dead seem to be coming back to life. The reader can choose how the character will deal with the rising corpses, whether to fight them or try to find a way to put them back to rest.
How about a camping trip gone wrong in a forest rumored to be home to a vengeful spirit? The isolation and unknown can add to the scare factor.
The theme of a possessed person. Their behavior changes drastically, and they do things that are not normal, like speaking in tongues or having superhuman strength. It gives a sense of the unknown and the fear of something taking over a person's body.
One theme could be a desolate forest at night. There are strange sounds coming from the bushes, and the trees seem to be alive and menacing. Also, the idea of a vengeful spirit is a classic. A spirit that has been wronged in the past and now seeks revenge on the living, following them everywhere they go.
One idea could be a fanfiction where the characters from the original 'Scary Stories to Tell in the Dark' find themselves in a modern-day setting. For example, they end up in a big city and the same dark forces start to haunt the skyscrapers and alleys. Another could be a prequel fanfiction, showing how the first scary story in the book actually came to be. Maybe it was based on a real - life event that was long forgotten until now.