The rules are pretty loosely written without too much fluff on what the nature of the zone is. Just that it's a hostile place with dangerous people and creatures of unspecified origin (nuclear disaster, alien landing, dimensional rift) and people go into it to hunt for artifacts. So I think you could adapt it to that movie's premise without a problem. When talking to the creator on Facebook, his goal seems to be providing a basic rules framework and for people to use their own creativity in what they do with it.
Chris