Red Dead Redemption: Undead Nightmare (Downloadable Content) 

Red Dead Redemption: Undead Nightmare, was released for Halloween in 2010. It turned out to be one of the best DLCs ever made. The plot of Undead Nightmare starts when a mysterious plague starts infecting people and turning them into zombies. The hero from Red Dead Redemption: John Marston, goes out to find a cure for the plague. On the way players can defend towns from zombie attacks making them safe until the next attack comes. Undead Nightmare also gives 2 new game modes one in which 4 players have to survive for as long as they can. Undead Nightmare also gives 8 new zombie skins to use in multiplayer. Like the game, Undead Nightmare allows the player to free roam and go wherever they want. The game also has many new side missions and things for achievements. For example, players can find 4 special horses each with their own special ability and when the player obtains all these 4 horses, a magical "Unicorn" appears and players can catch it. Another example is of a Sasquatch which you can find randomly when exploring. The DLC is at least 6 hours long and can be longer if you do all the extra things in the game. Also, since the game has multiplayer mode, the fun will never end as long as you keep playing with your friends. The DLC is just as fun as the game itself and most likely the best DLC of 2010. I give Red Dead Redemption: Undead Nightmare a 9/10. The game is very fun, but after a while the game really does get repetitive.