The feeling of being trapped is another scary part. Tubes usually have limited exits. So when something bad starts to happen, like in those stories where strange creatures or forces are present, the characters feel there's no way out. Also, the unknown is terrifying. In 'tube horror stories', there could be all sorts of things hidden in the tube that we don't know about, like ancient curses or otherworldly beings.
The darkness is often a very scary element. In a tube, it can be pitch - black and you don't know what's lurking. For example, in many 'tube horror stories', people can't see the threats until it's too late.
The scariest element could be the sense of the unknown. For example, in many stories, there are strange noises or happenings that the characters can't explain. It's that not - knowing what is causing the fear that really gets to you.
The isolation in many of the stories is really scary. Like when a character is alone in an old, abandoned building, cut off from the outside world, and they start to feel like they're being watched by something malevolent. There's also the fear of the supernatural, such as ghosts or demons that defy the laws of nature. This makes the characters, and the readers, feel powerless against them.
The unknown is the scariest element. When a stranger appears in a horror story, we don't know their motives or what they are capable of. For example, in the story where a stranger gets into a car, we don't know if they are a ghost or some kind of malevolent spirit. Their sudden and unexplained actions are terrifying.
The idea that slime could be alive or sentient is terrifying. For example, when the slime in the laboratory became aware and started to attack people. It goes against our normal understanding of non - living substances. Also, the fact that it can engulf things, trapping people or objects within it. It gives a feeling of helplessness as there's no easy way to escape from a mass of slime.
The scariest element is often the presence of vengeful spirits. These spirits are usually the result of some injustice or tragic death in their past lives. For example, a woman who was wronged and killed might come back as a ghost to seek revenge on those who wronged her.
The distortion of the normally cute and friendly ponies is quite scary. When they become menacing or possessed - like, it's a big contrast to what we expect from MLP. For example, seeing Pinkie Pie with a blank stare and a menacing grin instead of her usual happy face.
The isolation. When you're in the woods, you're far from help. If something goes wrong, there's no one around. It makes any strange noise or sight much scarier.
The isolation. When you're in the mountains, you're often far from help. If something goes wrong, like in a horror story, you can't just call for immediate assistance. You're on your own, and that makes any spooky situation much scarier.
The idea that they seem to have a malicious intent in some stories. Like they are out to scare or harm the owner. In one story, the LPS toys would arrange themselves in menacing formations when the owner was asleep. They would form shapes that resembled scary creatures, and this made the owner feel constantly on edge, as if they were being targeted by these small toys.
The isolation. When you're running alone, especially in a remote area, and something strange starts to happen, it's terrifying. There's no one around to help you right away.