Something has gone terribly wrong at research station 320, a secret research facility one mile benea...
Something has gone terribly wrong at research station 320, a secret research facility one mile beneath the earth's surface. All communication are gone, all mean of escape destroyed and an extremely dangerous horde of rapidly mutating ancient flesh eating creatures are conuming everything in their path. Eight survivor of the outpost, two research subjects, three mercenaries, two research technician and a medic barricade themselves inide a remote area of the facility with little food, almost no mean of defene and little hope of rescue. Their one possible escape route is through thirteen levels of terror that will lead them to the surface. And one of them is not who they seem to be, but the darkness itself which has taken human form.