Aug 23, 2011 09:00 GMT  ·  By

The fourth downloadable content pack for Call of Duty: Black Ops, the Rezurrection map pack, is now available for download on the Xbox Live online service, exclusively for the Xbox 360 console.

Call of Duty: Black Ops is close to celebrating a year since its release, but the game is still going strong thanks to the impressive support from its developer, Treyarch, which released three downloadable content packs this year, bringing new maps for the competitive multiplayer, as well as for the cooperative Zombies mode.

Now, the fourth and last map pack is being rolled out onto Xbox Live today, in the form of the Rezurrection DLC for Call of Duty: Black Ops.

The map pack contains an all-new level, in the form of Moon, which sees players battle the legions of undead on the Moon, obviously. Besides that, the DLC also brings remastered versions of the four Zombies maps from Call of Duty: World at War.

"Lift off into the ultimate Zombies epic with Call of Duty: Black Ops Rezurrection, and be the first to launch into space for a new dimension of undead action! This all-Zombies content pack hurls players into orbit with "Moon," the climax to the Zombies saga, as well as the most challenging and thrilling adventure yet. The undead shift in and out of sight, waiting for the perfect opportunity to strike. Undead astronauts easily shamble toward their next meal, unaffected by the base's fluctuating gravity."

In addition to the final chapter, Rezurrection also includes:

- Four remastered levels from Call of Duty: World at War: "Nacht der Untöten," "Verrückt," "Shi No Numa," and "Der Riese," where it all began. - An enhanced Zombies soundtrack including, three tracks never before available for purchase. - A new Zombies "Moon" theme. Besides this new content, Rezurrection also brings six new achievements worth 150 Gamerscore points, which you can check out below.

Cryogenic Slumber Party (75G) – In Moon, complete Richtofen's grand scheme. One Small Hack for Man (5G) – In Moon, hack something. One Giant Leap (5G) – In Moon, become trapped in the Receiving Area and free yourself through resurrection in co-op. Perks in Spaaaaace (30G) – In Moon, purchase every Perk in one game. Fully Armed and Operational (25G) – In Moon, acquire 3 Pack-A-Punched weapons at the same time. Ground Control (10G) – In Moon, prevent each excavator from breaching the base in one game. Rezurrection is now available as a timed exclusive on the Xbox 360 platform on August 23, costing 1200 MS Points.

Those who bought the Call of Duty: Black Ops Hardened or Prestige Editions get the DLC for free, as they already had the four remastered maps. Treyarch outlined the steps they need to take below.

"If you have already downloaded the Classic Zombies Pack that came with the Hardened and Prestige Editions of Call of Duty: Black Ops, fire up the game and go to the Zombies menu. Select either SPLITSCREEN or XBOX LIVE and make sure you are using the XBOX live profile that you used to redeem the maps. There will be a new menu option that reads "Free Zombie Level." Select this option and you will be allowed to download Rezurrection for zero points starting on August 23."