Red Dead Redemption is not required to play the game When former outlaw John Marston wakes up at his farmhouse he finds a world gone insane overnight deranged hordes have overrun the towns & outposts of the American frontier In a desperate attempt to save his family Marston must traverse a world torn apart by chaos & disorder using every skill he has to survive long enough to find a cure Undead Nightmare combines a terrifying single player campaign as well as the full suite of amazing multiplayer content for one of the biggest games of the year Red Dead Redemption Take on a brand new undead-riddled single-player adventure Experience completely new gameplay mechanics weapons & world design Battle against four different Zombie classes with detailed character design Encounter Graveyard action areas as well as Undead & Mythical animals Find New Collectible Outfits & Challenges to complete 7 hours of single-player gameplay