When you ask anyone to name their favourite part of Call of Duty,you'll hear the answer 'Killing Nazi Zombies' nine times out of ten. The Nazi Zombie Mode is a highly appreciated multiplayer style of play, made famous by Treyarch’s previous title: Call of Duty World at War.

Last Friday, August 13th, Josh Olin, Treyarch's Community Manager, confirmed that Nazi Zombies will again invade your universe as "callback co-op levels" in the special editions of Call of Duty: Black Ops. Players will be getting to kill Nazi Zombies all over again.

The Call of Duty: Black Ops Hardened Edition can be pre-ordered from Gamestop for $79.99 (Xbox 360, PS3) and contains, along with said 4 extra playable co-op maps, a limited edition Call of Duty Black Ops Collector’s Medal, an exclusive Black Ops Xbox Live/PSN avatar, a premium, special edition Steel Book case and, of course, the Call of Duty: Black Ops retail disk.

If you’re not afraid to shell out some extra dollars ($149.99) you might want to get the Call of Duty: Black Ops Prestige Edition that comes with a RC-XD Video Surveillance Vehicle like the one seen in the recently released Call of Duty: Black Ops Multiplayer Trailer. The Prestige Edition also includes the full Call of Duty: Black Ops Hardened Edition and can be pre-ordered from Gamestop (PS3, Xbox 360).

Looking forward to November 9th, 2010, the day Black Ops released.