The standalone expansion pack for Red Dead Redemption, Undead Nightmare, was released, introducing a zombie-themed alternate reality to the original game.
A sudden and mysterious plague turns people in the American frontier into zombies, spreading rapidly across the land.
John Marston's wife Abigail and son Jack fall victim to the undead plague, prompting John to seek a cure.
John Marston sets out alone to find the source of the plague and a possible antidote, starting his dangerous journey.
John Marston discovers Father Gabriel, a priest who offers aid and knowledge about the undead infection.
John rescues a young woman known as the Farmer's Daughter, who is immune to the plague and key to the cure.
John confronts a gigantic undead buffalo, a boss threatening the safety of the frontier.
John faces Gage, a former outlaw turned undead menace terrorizing settlers.
John learns that a Native American artifact is responsible for the undead outbreak and seeks to destroy it.
John fights through hordes of zombies to destroy the artifact, attempting to end the plague once and for all.
After destroying the source, John succumbs to his injuries, ensuring his family’s safety and peace returns to the frontier.