At the 2009 Electronic Entertainment Expo, Microsoft for the first time showed off gameplay footage of Halo 3: ODST, the full-priced stand-alone expansion to Bungie's 2007 sci-fi shooter. Among the clips was one for Halo 3's new cooperative multiplayer mode Firefight (below), which tasks gamers with fending off waves of increasingly lethal opponents as members of the elite ODST brigade.
Today, Microsoft announced a preorder incentive that ties into that cooperative multiplayer mode, saying that those who order Halo 3: ODST in advance of its September 22 ship date will receive a redeemable code to play as UNSC sergeant Avery Johnson in Firefight matches. The grizzled UNSC marine has appeared in all three of Bungie's Halo shooters (as well as a number of novels), having died a hero's death at the hands of 343 Guilty Spark in the final scenes of Halo 3.
Halo 3: ODST will be available for the Xbox 360 as a $59.99 standard edition or as a $99.99 Collector's Pack, which comes with a UNSC-green special edition Halo wireless controller. In addition to the single-player campaign, ODST players gain access to three new multiplayer maps, the Firefight co-op mode, all previously released Halo 3 multiplayer add-on maps, and guaranteed access to the Halo: Reach multiplayer beta.
For more information, check out GameSpot's previous coverage of Halo 3: ODST.