Call of Duty: Black Ops DLC Escalation is now available on Xbox Live Marketplace. PC and PS3 users will have to wait it out, there is still no official release date for either medium.

The DLC features 5 new maps: Zoo, Hotel, Convoy, Stockpile and Call of the Dead. Escalation weighs in at a hefty 986MB and can be yours for all of 1200 Microsoft Points.

Buffy the Vampire Slayer star Sarah Michelle Gellar lends her voice to the DLC, along with Robert Englund, Michael Rooker and Danny Trejo; with Gellar and Englund appearing in the zombie map Call of the Dead.

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