Red Dead Redemption - Undead Nightmare

The fourth expansion pack, Undead Nightmare, was released on October 26, 2010. In this pack a horror element is added, with ghost towns and cemeteries full of zombies. It also brings a new single-player adventure, five new weapons, six new mounts, new animals to hunt, and eight more multiplayer characters. A new cooperative mulitplayer mode called Undead Overrun is included. This is survival mode in which waves of zombies attack the player characters.