Terminus

Civilization deconstructed itself like a riot in a madhouse. One minute it all functioned with a standard sort of craziness, and the next it devolved into ten billion psychotic inmates at each other's throats like suddenly sprung animals.

In the aftermath, a handful of guilt-wracked holdouts stumble onto a terrible secret. They must cross a blood-soaked wasteland where they confront and overcome hordes of crazed lunatics and ravenous chimeras to investigate the long-standing enigma we call "Area-51", where Terminus begins.