&nb sp;            

Although the gameplay of Halo 3: ODST bears a strong resemblance to previous Halo games, the player does not assume the role of the Master Chief as in the Halo trilogy. Instead, the player controls a lone soldier in the city of New Mombasa, Kenya Since the soldier, known as an ODST or Orbital Drop Shock Trooper, does
not possess Master Chief's advanced armor, reflexes and strength, he is
more vulnerable to weapons fire; players are forced to act more
cautiously. While the game is not focused on stealth gameplay, some
elements of stealth will be incorporated. It will also include an open world environment.

The main objective of ODST is to lead the soldier through the
ruins of New Mombasa and discover what happened to his missing
teammates. After finding a piece of evidence left behind—a sniper rifle
hanging on a lamppost, for example—a flashback is triggered and the
player assumes the role of the missing soldier^. After players find the first beacon, the choice of where to go next is up to the player.

ODST's multiplayer offering is similar to Halo 3's, and will ship with a total of twenty-four maps: the original eleven Halo 3
maps, the Mythic Map Pack (three maps), Legendary Map Pack (three
maps), Heroic Map Pack (three maps), and the map "Cold Storage". Three
more new maps will be included in the game.