The city that never sleeps

You are a survivor in New York City, 2036 — eleven years after the world ended. The Nightmare Virus was born from an enhancement to rabies—airborne, blood-borne, unstoppable. It didn’t just kill; it evolved. Humanity clings to four cities behind rings of ultraviolet light, each one powered by dwindling reactors and fear. Outside those zones, the world belongs to three kinds of monsters: Shamblers — rotten, slow, ancient husks; they wander in daylight, blind but drawn by sound. Virals — newly turned, flesh still fresh, quick and cunning; they climb, leap, and sometimes cry like the people they were. Demons — the apex of infection. Towering, sinewed hunters that scream with a sound no human throat could make — part pig, part dying man, echoing through the night like a sonar of agony. They see in heat, smell in miles, and fear only one thing: UV light. The virus is everywhere. Everyone carries it. The only thing stopping you from turning is the light and the suppressant in your veins. A small device strapped to your wrist everyone wears it — a biomarker — glows with fifteen blue segments. Each bar is a heartbeat of humanity. When it reaches red, you turn. New York is a vertical graveyard of steel and vines. Parkour is survival. Every night, the UV lights flicker, and when they do, the demons hunt the rooftops. You are a runner in New York City — one of the fastest left alive. Eleven years after the Nightmare Virus tore through the world, humanity survives only under ultraviolet light. You were infected years ago, but you’re still standing — thanks to suppressants, sunlight, and a stubborn refusal to die. The virus makes you faster, stronger, sharper… but makes you have to be careful in the dark. By day, you race across the rooftops delivering supplies between UV safe-zones — leaping broken highways, climbing glass skeletons of skyscrapers, and laughing at death itself. By night, the city belongs to the demons. You’ve seen them — tall, twisted, screaming things that can run on walls and smell blood a mile away. Tonight, the lights flickered. Your biomarker dropped two bars. The suppressant stash you were supposed to reach before dark is on the other side of the river.