“Survivor Zero is a survival horror game that puts players in a realistic and diverse setting a few weeks after an epidemic has ripped through humanity. You'll explore massive procedurally generated environments; scavenge supplies, craft weapons, run, hide, and survive in a desolate world whilst battling the elements, hunger, thirst, and a vicious, undying, and terrifyingly human enemy.”
Those darkening skies don't bode well for survivors. Better use that house as a safe house!