Help! I'm trying to find the name of a movie where a guy find a portal to another dimension in a warehouse. He arrives in this apparently utopian society. Some details I can remember is that everyone shares cars, and a policeman gives the main character a leash for his dog. I think the guy leaves and comes back with a friend but they get stuck there and find out that anyone who is an outcast of an kind gets beaten to death by all the other citizens in this big game. They have spades or clubs (like from a deck of cards) printed on the bats I think? Does anyone know this movie? Its driving me crazy trying to find it! Thanks!