For me, the 'Candle Cove' story is really scary. It was about a kids' show that no one else seemed to remember but a few people. They described it as having disturbing puppets and a really eerie atmosphere. The fact that it seemed like a shared false memory among some, and the details they remembered were so creepy, gives it a very unsettling feel.
One interesting Creepypasta life story is about 'Jeff the Killer'. It tells of a young boy who went through a traumatic event that turned him into a deranged killer. His face was burned and he carved a smile into his face. He then started to kill people at night, often leaving his signature 'Go to sleep' message.
The unknown factor. In Creepypasta real life stories, there are often elements that are left unexplained. For example, in the 'Slender Man' story, his sudden appearances and disappearances with no clear explanation create a sense of unease. Our brains are wired to fear the unknown, and these stories play on that fear.
One real life creepypasta story is about the 'Slender Man'. Supposedly, he is a tall, thin figure in a black suit with no face, lurking in the woods. People claim to have seen him, especially kids. It's said that if you encounter him, you might experience strange things like getting lost in familiar places or having disturbing hallucinations.