Red Dead Redemption: Undead Nightmare

Red Dead Redemption: Undead Nightmare, later released as a standalone game, adds a new single-player experience in which Marston searches for a cure for an infectious zombie plague that has swept across the Old West.

Across the vast Western frontier, a plague is spreading... When former outlaw John Marston wakes up at his farmhouse, he finds a world gone insane: overnight, deranged hordes have overrun the towns and outposts of the American frontier. In a desperate attempt to save his family, Marston must traver...