Fans have been hoping for a sequel to Red Dead Redemption: Undead Nightmare for 15 years. Instead of zombies, a new Undead Nightmare could explore aliens based on hints in Rockstar's previous games.

Watch the Red Dead Redemption and Undead Nightmare launch trailer for this Western action-adventure game from Rockstar Games. Red Dead Redemption and the zombie-horror companion story Undead ...

Cursed treasure? A biblical end of days? Just as Red Dead Redemption satirizes the "taming" of the American frontier, Undead Nightmare pokes fun at the pulpy Romero-driven zombie mythos of the 1960s.