Microsoft and Bungie's blockbuster sci-fi shooter series continues with this standalone expansion to Halo 3. Battle through an all-new campaign as an ODST, short for Orbital Drop Shock Trooper, in a storyline that serves as a prequel to the events chronicled in Halo 3. Your mission is to locate the remaining members of your squad somewhere within the Covenant-besieged city of New Mombasa. A new multiplayer mode entitled "Firefight" is introduced, where up to four players must work together to repel increasingly challenging waves of enemies. A second disc is home to a total of 24 multiplayer maps, three of which are new, with the remainder comprised of the "legendary," "heroic," and "mythic" Halo 3 map packs that were previously available as downloadable content via Xbox Live. Initial runs of Halo 3: ODST also include a key to the multiplayer beta of the franchise's next anticipated entry, Halo: Reach. This collector's pack includes both the game and an exclusive wireless controller featuring custom-designed artwork.