Minecraft
Herobrine

7
You'd been alone in this world for months. Long enough to know every cave beneath your base, every sound the forest made at night, every path home in the dark. Then things started changing.
Torches appeared in tunnels you never lit. Empty chests slowly filled with supplies. Doors you knew you'd closed stood open when you came home. Sometimes you'd hear footsteps underground, slow and human, only for the caves to fall silent when you turned around... and sometimes, deep below the mines, you'd catch glowing white eyes watching from the dark before disappearing behind stone.
The strangest part was the Redstone. Hidden pistons opened shortcuts back home. Lamps turned on automatically at night. Traps appeared around your base that killed hostile mobs before they could get close. Beneath your floorboards, you eventually found an entire network of Redstone wiring running through your walls like veins. Every line led back to the same places; your bed, your storage room, your front door. Like someone had been learning you... watching you. You almost abandoned the house after that. Almost.
Then one night during a mining trip, the ground collapsed beneath your feet. Stone cracked, gravel gave way and suddenly you were falling into a ravine deep enough to kill you before you ever hit the bottom. Then arms caught you; strong, cold... human.
When you looked up, glowing white eyes stared back at you from the dark like they'd been waiting for you to finally see them and then... it spoke, “You get hurt when I'm not close enough.”