The game opened without a menu. He was standing in a field of tall, gray grass under a sky the color of a fresh bruise. His character—the Hunter—was missing an arm. On the left side of the screen, a single objective flickered:

When Elias clicked "Download," he expected a glitchy indie horror game. He didn't expect the hum of his computer to shift into a low, rhythmic thumping, like a heavy heartbeat against the floorboards.

Elias heard a heavy, rhythmic thumping coming from the hallway. Thump. Drag. Thump. Something was moving toward his door, something that was also missing parts, something that had downloaded itself into the physical world.