A small team at Bungie works on an expansion pack that expands to the size of a complete title, featuring a single player campaign that follows a team of ODSTs that drop into New Mombasa during the timeline of Halo 2. Introduced the new Firefight mode, allowing players to tackle increasing waves of Covenant on multiplayer maps, either solo or with other players using splitscreen, LAN or Xbox Live.

event start: 
09/22/2009