The world of the amazing Red Dead Redemption will never be the same again as the undead invade it with Undead Nightmare!

Undead Nightmare includes, among other things, a brand-new story with new challenges, quests, weapons, and events (such as Missing Persons where you have to find survivors among the undead), four types of zombies, infected animals, and the Undead Overrun survival mode for multiplayer, where you face increasingly difficult enemies in waves.