Bungie and Microsoft have confirmed that the Halo 3 Legendary Map Pack is now available on the Xbox LIVE Marketplace for 800 Microsoft Points. The second map pack available for Halo 3 includes three new multiplayer maps called Blackout, Ghost Town and Avalanche, as well as a load of new Forge options.

As an added bonus, for a limited time only, gamers who purchase the Legendary Map Pack will receive a four month subscription to "Bungie PRO" via Xbox LIVE. Bungie PRO expands the Halo 3 experience by increasing the maximum number of file share storage slots from six to twenty-four while also increasing the total file storage size to 250MB. This will allow players to upload and share more films, maps, screenshots and game-types than ever before.