'Halo 3: ODST' game gallery

Fire fighters

Of course it wouldn’t be a “Halo” game without some great multiplayer, and “ODST” not only includes all your favorite modes from previous games but an all-new one as well. Dubbed “Firefight,” this mode—much like “Horde” mode in “Gears Of War 2”—has you and three friends fight waves and waves of increasingly difficult enemies.