Army of Two: The 40th Day is a third-person shooter video game developed by EA Montreal and published by Electronic Arts. Released for the PSP in January 2010, it's the sequel to the original Army of Two. The game follows protagonists Rios and Salem as they fight through war-torn Shanghai in an effort to uncover the secret behind the city's devastation. It features cooperative gameplay, a cover system, and a weapon customization system. Players are able to make moral decisions that affect the game's story and outcome.