Like any Call of Duty game the
multiplayer will set the standard for all other console games, with
enhanced customisation tools, playable vehicles and a revamped scoring
system.

• Retro Warfare:
  Call of Duty explodes the myths of the Cold War as you join a team of
  Black Ops soldiers caught up in the fight against communism in Vietnam
  and beyond.
• Ammu-Nation: Use new special ammo
  including an explosive crossbow, Dragon's Breath flame rounds for your
  shotgun and a range of other period weapons.
• Twisted Metal:
  Take the controls of the iconic SR-71 Blackbird as you direct
  operations from high above or jump into an attack chopper in Vietnam for
  some close-up action.
• Online Perks:
  Create-a-Class 2.0 customisation tool lets you personalise your online
  battles even more, with new perks and revamped rules for killstreaks.