When a tragedy of classic proportions strikes Shanghai, China, Rios and Salem discover themselves correct in the center of it all—the incorrect place, the wrong time, but the right squad. A carefully arranged series of mysterious disasters is dragging Shanghai to the brink of ruin and now the Army of Two must brawl their way through devastated city districts as they try to strike the odds and expose the secret of the 40th Day.

Army of Two: The 40th Day attributes a bigger playbook of new co-op moves that either player can employ at any time, opening up new plans and myriad choices for both players. The result is a bigger, enhanced, more organic and immersive co-op experience that permits gamers put their best two-man tactics to use whenever and wherever they desire.