Yeah I’m getting this one..  I love Red Dead, and of zombies can only make it better!

Infecting the world of Red Dead Redemption, the pack features a brand new single player story following John Marston as he rides off into the unknown in search of a cure for the zombie plague seizing the nation.  The new pack introduces new multiplayer features, weapons, undead animals, and many more hidden surprises. 

reddeadredemption undeadnightmare large thumb Rockstar Presents the Undead Nightmare Debut Trailer