A series of mysterious catastrophes have rocked Shanghai, driving the embattled city to the brink of utter ruin. In the heart of this chaotic environment, the powerful Army of Two has emerged once more. As Rios and Salem roam the ravaged city districts in pursuit of the secrets behind the man-made disaster, they'll find themselves caught up in a dangerous game that will test their teamwork to the limits.Army of Two: The 40th Day delivers an immersive cooperative gameplay experience. Team up with a friend to prove you have the teamwork and strategy it will take to triumph in a city embroiled in a nightmarish scenario. Continue the fight online in an array of explosive multiplayer modes, including the four-player Extraction bonus mode in which you'll move from point to point throughout the city, taking on waves of determined enemies. Take advantage of incredible advanced weapon customization to heighten your firepower in the heat of battle as you strive to unlock the secrets of the mysterious 40th Day.