Borderlands : Mad Moxxi's Underdome Riot

In order to activate this game, you will require a third-party 'Steam' account. For full details on how to activate please follow this link: https://support.steampowered.com/kb_article.php?ref=5414-TFBN-1352

*This content requires the base game Borderlands on Steam in order to play.*

Mad Moxxi's Underdome Riot is an addon pack for Borderlands that includes a new cooperative arena game mode and a stash to store your gear. 
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)

Multiplayer options may have changed, please see the main title for more information

Use of this product requires agreement to the following third party end user license agreement: http://www.take2games.com/eula/ © 2002-2010 Take-Two Interactive Software and its subsidiaries. Borderlands, 2K Games, the 2K Games logo, and Take-Two Interactive Software are all trademarks and/or registered trademarks of Take-Two Interactive Software, Inc. All Rights Reserved.