Borderlands: Mad Moxxi's Underdome Riot announced

Second DLC announced for Borderlands

There were more informative screenshots available for Mad Moxxi's but, I mean, really...

This is actually last week's news. I was waiting for someone else to post it. I know. I know.

Are you god's gift to gun fights? Think you're the best? Wanna prove it? Then help us celebrate the grand opening of Marcus Bank (a subsidiary of Marcus Corp) by killing hundreds and hundreds of people in Mad Moxxi's Underdome Riot, the only competitive arena around where your next of kin can be assured that you're coming back famous... or not at all.
(All proceeds are kept by us)

Full press release from 2kGames.

New York, NY - December 10, 2009 - 2K Games announced today that the second piece of downloadable content for Borderlands, Mad Moxxi’s Underdome Riot, will be available on December 29, 2009 from the Xbox LIVE Marketplace for the Xbox 360 video game and entertainment system from Microsoft for 800 Microsoft Points and on January 7, 2010 from the PlayStation Network for $9.99. The downloadable content will also be available on Windows PC. This explosive piece of action-driven content is in development at Gearbox Software and provides players with more methods of destruction as they tear through the denizens of Pandora.

Mad Moxxi's Underdome Riot is an intense single-player or cooperative experience that expands the mayhem by adding three new Riot Mode arenas where players will endure an onslaught of Pandora's baddest enemies. Working together, players will fend off the masses as they fight for fame, honor, and more importantly, loot. Mad Moxxi's Underdome Riot also adds a new bank feature, which allows players extra storage capacity for when they encounter one of the more than 16 million weapons that Borderlands has to offer; and the ability to acquire two additional skill points as quest rewards, making their characters even more powerful than before.

Featuring extensive co-op integration that seamlessly blends the single-player and multiplayer experiences, Borderlands allows players to freely join or leave each other's games at any time for collaborative mayhem or the freedom to choose to play in full single-player mode to experience the world on their own. Borderlands also includes a groundbreaking weapon generation system that offers a near infinite variety of weapons to the player. Borderlands combines these fan favorite features with addictive non-stop action to form a breakthrough experience that challenges the conventions of modern shooters and RPGs.

Borderlands, rated M for Mature by the ESRB, is developed by Gearbox Software and is currently available for the PlayStation 3 computer entertainment system, the Xbox 360 video game and entertainment system from Microsoft and Windows PC. The Zombie Island of Dr. Ned, the first piece of downloadable content for Borderlands, is currently available for all platforms.

Click on the pic to go to the official page.