IGN writes: "I recently sat down with Rockstar to play about an hour's worth of the upcoming expansion to Red Dead Redemption, dubbed Undead Nightmare. I was not prepared for how massive this downloadable add-on is. For just 10 bucks (800 Microsoft points), Rockstar is adding what nearly amounts to a whole new game. There's a roughly six hour storyline, complete with cutscenes and new music. There are all new enemies, mounts to ride, outfits to wear, side-quests and challenges. There's even new multiplayer content (which I can't talk about until next week). This download is, to put it succinctly, absolutely huge. And it's all going to be available October 26."