I tried looking for a thread just about COD Zombies but surprisingly I couldn't find any. I love it and the upcoming Black Ops 3 has been the only game that has made me want to finally go out and buy a PS4.... just for the return of Zombies.
In Black Ops 2 they left us with that ending cutscene at the end of Origins which pretty much left everyone confused as to what was going on in the Zombies storyline. Here's a link to that video in case you haven't seen it
http://youtu.be/4KDAfL0Daw4
If you have never looked up the Zombies storyline I suggest you go on YouTube and find some videos explaining it because it is really interesting and complex.
So hopefully there are others on here that also enjoy playing it as I do!
