A paid demo? Some pre-game DLC? A mini game? A game? Just what Dead Rising 2: Case Zero is exactly remains uncertain. What I do know is that it costs 400 Microsoft points (5 American dollars) and is only available on XBLM as of right now. I can also say for certain that it takes place three years before the story of Dead Rising 2 and is an introduction to handyman and gruff father Chuck Greene. This zombie prologue offers one more fact about the world of Chuck Greene, Chuck’s daughter is infected.