Red Dead Redemption: Undead Nightmare is an action-adventure, horror-survival game for the PS3, offering a standalone expansion to the acclaimed Red Dead Redemption. Set in an alternate, zombie-apocalyptic version of the Wild West, players control protagonist John Marston on a quest to find a cure for a mysterious undead plague ravaging the frontier. The game blends classic Western themes with horror elements, featuring both gun-slinging combat and undead-horde encounters, while maintaining the open-world exploration and rich storytelling of the original.