The all-new behind the scenes multiplayer video for Call of Duty: Modern Warfare 3. Infinity Ward and Sledgehammer Games bring you a preview of Kill Confirmed and Team Defender, two of the all-new multiplayer modes in Modern Warfare 3. Learn how MW3 takes multiplayer customization to a whole new level: Private matches have been significantly enhanced to allow players to create new, fully customizable game modes and share those newly created game modes with friends and the community.