Red Dead Redemption: Undead Nightmare is an action-adventure, third-person shooter with a horror twist, developed by Rockstar Games for Xbox 360. In this standalone expansion to the original game, players navigate a zombie-infested Wild West as protagonist John Marston. Tasked with finding a cure for the infectious plague turning people undead, Marston must battle hordes of zombies, mythical creatures, and survive in a world succumbing to supernatural chaos, all while upholding his honor amidst the terrifying apocalypse.