[Update: 9am PT] This giveaway has ended. Winners were Wolfanoz, cookblaze, MikkleThePickle, ichfan, mstrmold, laidback, rosewood, Ormsbee, Don Koharski, and icecreambus. Codes sent via ShackMessage. Thanks to all who entered.

[Original Story] Xbox 360 soldiers, grab your gear. Call of Duty: Black Ops welcomes a new map pack today, featuring four competitive multiplayer maps and one zombie-mode specific locale.

While the "Escalation Map Pack" is available for $15 (1200MS Points) on the Xbox Live Marketplace right now, Shacknews wants to give its loyal readers a chance to win a voucher to receive the content for free.

Shacknews, Activision, and Treyarch are squadding up to give away ten codes for the just released "Escalation Map Pack" for Call of Duty: Black Ops. The maps are currently only available for the Xbox 360.

Here's how to enter the giveaway:

• Leave a comment. (This giveaway is now closed.)

• You must be 18 years or older and a resident of the United States or Canada (Puerto Rico and Quebec excluded).

• Limit 1 entry per person (Only your first comment will be counted.)

• The entry period ends at 09:00AM PT tomorrow, May 4, 2011.

• At that time, we will randomly select ten (10) winners to each receive one (1) Escalation Map Pack voucher for Call of Duty: Black Ops for the Xbox 360 (MSRP $15).