Then, his front door clicked open.

For three years, gamers had theorized about the "Alpha 1.5 License Key." Urban legends said it wasn't a code to unlock a download, but a literal key. A physical object that, when entered into the game’s debug menu, unlocked the final, forbidden floor of the Neighbor’s house—the floor where the game’s source code lived.

He pressed the brass key into Leo's palm. It was hot. Sizzling.

Then the lights went out. And the Neighbor’s basement welcomed its newest resident.

"You typed the license," the Neighbor rasped, voice like a rusted crowbar. "Now you're licensed to enter."

Leo tried to scream, but the floor lurched. The living room warped into the Neighbor’s foyer. Crowbars and bear traps lined the walls. A child’s red toy car sat on the stairs.