File: Guntastic.zip ... -

He moved the character—an identical digital twin of himself—through the hallway. The physics were uncanny. He could see the slight scuff marks on the floorboards where he’d dragged his bike last week.

When he clicked it, his monitor didn’t flicker or go black. Instead, it emitted a low-frequency hum that made the water in the glass on his desk ripple. The game didn’t have a main menu. It just dropped him into a hyper-realistic, grey-scale rendering of his own apartment. File: Guntastic.zip ...

The download finished at 3:14 AM. No description, no screenshots, just a 400MB archive titled Guntastic.zip posted on an obscure forum thread that had been dead since 2008. Elias unzipped it. Inside was a single executable: GUN.EXE . He moved the character—an identical digital twin of

The weight in Elias's hand grew warmer. The game camera panned to the digital front door. Something was tapping on the other side. When he clicked it, his monitor didn’t flicker or go black

He looked back at the screen. He made his character pick up the gun. The moment the digital hand closed around the grip, Elias felt a cold, metallic weight settle into his own right palm.

From the floor above him, Elias heard the heavy, rhythmic thud of footsteps. They sounded exactly like the footsteps of the man in 4B—the one who played loud music until dawn. But these footsteps were different. They were slow, deliberate, and heading toward the stairs.

"Cute," Elias muttered, his heart rate picking up. "Someone mapped the building."