Call of Duty 4: Modern Warfare is a gripping modern-day action-thriller that deploys players into heart-stopping battles across the world's most treacherous hotspots. Featuring a tense storyline filled with plot twists, the title thrusts players into battle like never before. With amazing special effects, players are enlisted into one of the most photo-realistic gaming experiences imaginable. The community-oriented Call of Duty 4 multiplayer gameplay features a robust leveling system, a variety of unlockable perks, hot-join and matchmaking, as well as customizable classes and party capabilities to ensure that players of all skill levels can join in the fun for up to 18-players. Additionally over 100 challenges and a host of new game environments and modes deliver unlimited possibilities