Developed exclusively for Xbox 360 by acclaimed developer Bungie, Halo 3: ODST is a new game in the Halo saga that lets people experience events leading up to the epic story told in Halo 3 through the eyes of an ODST (Orbital Drop Shock Trooper), as theysearch for clues leading to the whereabouts of their scattered squad and the motivations behind the Covenant's invasion of New Mombasa. The release adds a new dimension to an all-encompassing universe that gamers around the world have known and loved for close to eight years.

Halo 3: ODST also introduces Firefight, a new cooperative multiplayer mode where up to four players can assume the role of an ODST squad and fight together to take on increasingly challenging waves of enemies. Also included are three new Halo 3 multiplayer maps on a 2nd standalone disc, which includes all original Halo 3 maps, as well as the Legendary, Heroic, and Mythic Map packs for a total of 24 maps.

• All-new campaign content. The Halo 3: ODST campaign explores mysterious events leading up to the Master Chief's return to New Mombasa in Halo 3. Experience the fate of Earth from the brand-new perspective of a special forces ODST (Orbital Drop Shock Trooper).
• A new hero: Prepare to drop. ODSTs are highly-trained special forces operators. Known for their courage, valor and willingness to tackle missions no sane soldier would, ODSTs pride themselves on being the first unit deployed into hostile situations.
• Expanded multiplayer experience. Halo 3: ODST includes an all new 4 player co-operative mode, Firefight on the campaign disc, plus the entire Halo 3 multiplayer experience on a second disc.
• Key to Halo: Reach. As a special bonus for fans, all copies of Halo 3: ODST will provide access to the Halo: Reach multiplayer beta when the beta goes live.