The second batch of downloadable content for Halo 3 is now available, it will cost 800 Microsoft points on Xbox Live Marketplace. Now you can have even more slanging matches with teenage kids with bad attitudes.

Avalanche and Blackout revive two fan-favourite maps from previous "Halo" games, while Ghost Town welcomes desolate jungle combat to the experience. And now, using new options in the Forge, players can create more detailed challenges and map variants than ever, while also utilising a variety of visual effects to create new, unique screenshots and saved films.

Avalanche is a throwback all the way to "Halo: Combat Evolved." This snowy battlefield was inspired by the original Sidewinder, but the massive, vehicle-oriented objective map adds a twist to its classic predecessor with all new interiors, dramatically reshaped exteriors and brand new vehicle variants. Admire the view from above, as Avalanche also marks the arrival of the Hornet to "Halo 3" multiplayer.

In keeping with the theme of "fan-favourites," Blackout will fill the void left by fans of "Halo 2’s" Lockout. Although fully re-visualised, this map adheres very faithfully to the tightly wound perfection of the original, but eschews Forerunner architecture in favour of industrial human design. Blackout is perfect for fans of small battleground Slayer matches.

The Legendary Map Pack also packs a brand new punch, in addition to the two classics, with Ghost Town – a battle-scarred maze of narrow passages and dangerous ruins. Collapsed ceilings and shell-battered buildings provide both valuable cover and deadly traps, as catwalks and stairways take the fight from claustrophobic ground combat to dizzying rooftop battles. Ghost Town is a mid-sized map ideal for Team Slayer games and smaller, objective types.

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 greatly 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.