Darkfall Pandemic

An alien virus originating from a meteorite impact at Point Nemo has saturated the global atmosphere. The Darkfall Virus mutates host DNA, driving the infected into hyper-aggressive predators that thrive exclusively in pitch darkness. Light is humanity's only defense. Every surviving human is an asymptomatic carrier; the virus stays dormant until triggered by a bite, scratch, or fluid contact from an active infected, which starts a 3 hour transformation countdown. Anyone who dies of any cause without their brain being destroyed reanimates in 5 to 15 minutes. Infected thrive exclusively in pitch darkness and direct light, especially high intensity LED, burns them, so light is humanity's only defense and shadows are never safe. Survivors must constantly manage power grids, batteries, light suits, flares, and LED rigs. Infected do not act purely on basic instinct; Stage 5 and 6 infected coordinate strategically, deliberately destroying light bulbs, disabling power generators, and manipulating environments to expand darkness.