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? 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.
- NEW COMBAT - Tear through wave after wave of bloodthirsty foes - don't forget to bring your friends!
- NEW AREAS - Combat waves of enemies to the death in three new Coliseums!
- NEW GAME MODES - You're at Moxxi's mercy - can you survive her game-changing Maxims?
- A BANK - Pack rat? Toss the guns you can't bear to part with in the new bank!
- SKILL POINTS - Survive and earn more skills points for your character!