A prophetically calamitous activity shooter set amidst an outsider intrusion. Most people and creatures have as of now been wiped off the planet, the eco framework has been modified to suit the needs of the outsiders, and the air has been made unbeatable for most earth animals, including people. Few people are still alive. They are scattered, stowing away in underground havens and their battle for survival is a miserable one. If all else fails, then just go with what works, which could bring considerably more devastation.