Periodically, "pages" appear on the cameras. You have to "collect" them by clicking on them to keep Slender Man’s influence at bay.
The air in the security office is thick with the smell of mildew and ozone. You’ve heard the rumors about the "Slender Forest" preservation site, but you never expected it to be run like a high-tech bunker. Five Nights at Slender
It’s 5:00 AM. The power is at 2%. Every camera is pure white noise. You can hear the sound of long, spindly limbs scraping against the metal door. You pull the lever to restart the generator, but it jams. Periodically, "pages" appear on the cameras
Running the cameras and the reinforced doors eats up electricity. If you run out, the lights go out, and you'll hear a soft, rustling sound behind you. Night 5: The Final Hour You’ve heard the rumors about the "Slender Forest"
Suddenly, the static on your main monitor clears. Slender Man isn't in the woods anymore. He's standing right behind your chair in the reflection of the glass.