Update: The contest has now ended and our lucky winners have been selected at random. Congratulations to TheIneffableBob, SeraphielX, wrog, oribiasi, pk04 and planetfoo, who can now find a download code sitting in their Shackmessages inbox.

With the second Call of Duty: World at War multiplayer map pack arriving in the Xbox Live Marketplace and PlayStation Store today, publisher Activision has provided us with a few download tokens that'll bring the new maps to Xbox 360 players at no cost.

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Otherwise sold for 800 Microsoft Points ($10), the add-on delivers four more arenas to Treyarch's shooter: Banzai, Corrosion, Sub Pens--traditional competitive maps--and Shi No Numa (Zombie Swamp), which expands the co-op Nazi Zombie mode.

For a chance at one of the free downloads, simply post a response in the comments below. Since we know you're eager to get into the swamp and hunt down flaming Hell Hounds, we'll randomly select the winners and hand out the codes later this evening.