We've been showing off screens for Red Dead Redemption's forthcoming DLC update, Undead Nightmare, over the past few weeks, but Rockstar have finally launched the pack's official trailer which reveals the single-player-centric content not only features Marston (though not sure how this works for those of us who've finished the game), but also other characters such as Seth, Sheriff Walton, Bonnie and more.

"I've seen husbands eatin' wives, mothers eatin' children," Marston proclaims in this trailer, which retains the feel of the original game, but offers up some seriously classic horror for good measure. The DLC will set you back 800 MS Points (AU$13) and $15.95 on PSN.

Watch it embedded below, or click here to download it in 720p.