Upon its release, Red Dead Redemption was met with universal critical acclaim, averaging approximately 95/100, 94% and 9.3/10 on review aggregate websites Metacritic, GameRankings, and GameStats, respectively, making it one of the highest-rated video games of all time. It won several Game of the Year awards. Reviewers praised the visuals, music, voice acting, open world gameplay and the story. As of February 2012, the Red Dead franchise has sold over 13 million copies. IGN also praised the game highly, ranking it third on their list of best games of this generation.
After the game's release, several downloadable content (DLC) additions were released. Red Dead Redemption: Undead Nightmare, which was also released as a standalone game, added a new single-player experience in which John Marston searches for a cure for an infectious zombie plague that has swept across the Old West. A Game of the Year Edition containing all additional content was released in October 2011.