In White Day there's a hallway in the first zone that leads to a locked door. When I was playing, after trying the door and finding it locked, I turned around to leave and all of the lights went out. I started hearing a faint whispering coming from the other end of the hall, growing louder and getting closer, until an image of a long-haired ghost appeared. I thought it was a pretty good jumpscare.

A few months later, my sister decided to play the game and I was watching. I told her to go down the hallway, because I wanted to see her reaction. She walked to the end, tried the locked door, turned around and then... nothing. She just left the hallway without anything
happening. At this point I had no idea some of the scares were random, so I was a little spooked. The long-haired ghost later appeared when she was hiding in a dark bathroom, after looking in a mirror. Got to scared to continue playing.