The Borderlands Double Game Add-on Pack contains the first two digital download add-on content packs released for the popular first-person shooter Borderlands, now consolidated on a single game disc. Loaded with tons of release specific missions, over-the-top zombie and riot arena combat that includes single and multiplayer action and exclusive Xbox Achievements, the combination of The Zombie Island of Dr. Ned and Mad Moxxi's Underdome Riot serves as the perfect compliment to the original game.

Borderlands: The Zombie Island of Dr. Ned is the initial add-on pack for Borderlands. Originally released as a digital content download, action in it is centered in the town and surrounding areas of Jacob's Cove, which is on the fictional Jakobs Corporation owned Island unofficially named Zombie Island. Here players are tasked with the completion of 20 exclusive Borderlands missions, involving the zombie infestation of the island, as well as various optional side quests. As the name of the island suggests, players will be kept busy honing their skills at killing zombies, zombie bosses and the other undead beings as efficiently as possible. In-game money is earned for these kills and available weapons come both in the form of randomly generated weapons and unique items taken off defeated bosses. The level of undead action experienced is directly tied to players' progression within the single player campaign within the main game, making for gameplay closely tied to the main game, and a zombie fest not to be missed.

Key Game Features:
The new explorable region of Jocob's Cove, containing further sub-regions.
20 unique Borderland missions.
New undead enemies, including Pumpkin Heads, Tankenstein and others.
Five new Xbox Achievements.
New unique weapons.
 
Borderlands: Mad Moxxi's Underdome Riot is the second add-on pack for Borderlands re-released on disc following initial availability via digital download. Designed with a Mad Mad Thunderdome ethic and feel, action here occurs within a series of spaces known as riot arenas where the changing rules, commentary and mood are provided entirely at the whim of the over-the-top and seductive ringmistress, Moxxi. Within the matches, both single player against AI and multiplayer player, players rack up kills using a variety of weapons and shields, earning themselves skill points and in-game loot that can be stored at an in-game bank. Combat occurs via a series of rounds, which are in turn made up of a number of waves and eventually lead to a boss battle. As action progress Moxxi adds and changes rules, making for a challenging affair. Unlike earlier content releases for Borderlands, Mad Moxxi's Underdome Riot allows for co-op functionality which both ratchets up the fun and increases players chances of success as the competition rises in later rounds.

Key Game Features:
Three new Riot Arenas.
Multiplayer support, including coop, in arena battles.
An in-game bank to store collected items and avoid cluttering your growing inventory.
Skill points as mission rewards.
New game mode, with waves of enemies.
Five new Xbox Achievements.