This wasn't the simple subway. The tracks were flooded canals, narrow walkways, and sinking library shelves. The trains were long, black gondolas piloted by cloaked figures with glowing oars. The power-ups were twisted: a Jetpack became a pair of wax wings that melted if you flew too high; a Magnet turned into a golden compass that pointed away from treasure.

“Benvenuto, runner. The tides are rising. Collect 5000 keys before the Acqua Alta, or your save file drowns forever.”

He never downloaded a third-party APK again.

But in the corner of the main menu, under “Settings,” a new, grayed-out option had appeared: