Return of Zombie Ops is a zombie modification for Call of Duty 4, it features content from Black Ops Zombie mode aswell as from Modern Warfare 3 Survival mode and Ghosts Extinction mode. It's set slightly in the future with some weapons from Ghosts, Black Ops series and Modern Warfare series as well as Crysis.
And even more preview!
Yay, we're getting closer to the start of the server and I'm in sharing mood. Give me some feedback guys. (and girls?)