The game takes place after a worldwide outbreak caused by a newly discovered parasite (which is heavily implied to be of alien origin). Most of humanity has been infected and turned into the “Ridden,” leaving players in a post-apocalyptic world. In this world, a group of veterans called the “Cleaners” comes together to fight off the zombies. The cleaners’ names are Walker, Holly, Hoffman, Evangelo, Karlee, Doc, Jim, and Mom.
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I really need to replay this game
fun game also great video