Walking Dead Risk

I have so many questions about how Walking Dead Risk works.  Is it the same rules of Risk, just with a different map?  Are there different teams, and the zombies are a NPC force that every player has to deal with?  Is every player on the same side and they are fighting zombies?



I am not sure Walking Dead Monopoly makes any sense at all.  I am not sure how you own property in the world of the Walking Dead.  At least it is not Walking Dead Payday.