Over on the Amazon.com it states that if you pre-order Halo 3: ODST you’ll receive a code to play as Sgt. Johnson in the new “firefight” co-op mode. The game is scheduled to be release on September 22, 2009. Here is some useful information to know about the game… Halo 3: ODST also includes a second standalone disc with three new Halo 3 multiplayer maps, all original Halo 3 maps, as well as the “Legendary,” “Heroic,” and “Mythic” Map packs for a total of 24 maps. So it is well worth the money to purchase the game in advance to pretty much dominate the maps before your friends do! For more information about the game check out the Xbox Halo page.