Download and play Call of Duty 4: Modern Warfare, the action thriller from the award-winning team at Infinity Ward Inc. Call of Duty 4: Modern Warfare arms gamers with an arsenal of advanced and powerful modern day firepower and transports them to the most treacherous hotspots around the globe to take on a rogue enemy group threatening the world. As both a U.S. Marine and British S.A.S soldier fighting through an unfolding story full of twists and turns, players use sophisticated technology, superior firepower and coordinated land and air strikes on a battlefield where speed, accuracy and communication are essential to victory.