From the review:
"Zombies are probably the biggest gimmick right now, especially in video games. Most people seem to agree that if you want something to be better, all you have to do is add zombies. Having been a zombie lover since childhood, it is nice to have so many options for undead entertainment, but I have to admit that I’m a bit tired of the whole thing. There’s an overabundance of zombies and they are becoming less interesting with each passing day. Even so, I still hold on to a thread of love for the little flesh-eaters and it’s hard to deny that the Undead Nightmare DLC for Red Dead Redemption is rather satisfying at times."