Halo 3 ODST campaign

Halo 3 ODST resembles all the other Halo titles, but instead of being Master Chief, the enhanced human supersoldier, you are "the rookie", a UNSC, in the city of New Mombasa. Since the soldier does not have as advanced armor, reflexes, and strength as Master Chief he is more vulnerable to gunfire which makes players have to be more cautious. Halo 3 ODST has the option unlike any other Halo which you can play the levels in any order you want.

Multiplayer Firefight

With the new firefight players can play with up to 4 different players against increasingly difficult waves of varied enemies.  Each player has a set number of lives and the game ends on depletion.  The enemy characters are generated at random.  There is no set number of rounds, maximum kills, or time limit.  Skulls can be turned on to increase the difficulty and add some variety.

Halo 3 ODST Coming soon to a store near you

Halo 3 ODST comes in a 2 disk set.  One has the campaign and Firefight and the other contains all 24 maps.  Maps consist of the original 11 Halo 3 maps (Construct, Epitaph, Guardian, High Ground, Isolation, Last Resort, Narrows, Sandtrap, Snowbound, The Pit, Valhalla), the Heroic map pack (Foundry, Rat's Nest, Standoff), the Legendary map pack (Avalanche, Blackout, Ghost Town), the "Cold Storage" map, and the Mythic map pack (Assembly, Orbital, and Sandbox) as well as three new maps (Citadel, Heretic, Longshore).