Destiny: Rise of Iron is a major expansion for Bungie's first-person shooter, Destiny. The expansion was released on September 20, 2016, as the fourth expansion ofDestiny. It revolves around the Fallen enemy race, as they have breached the Wall that surrounds Earth's last safe city and are utilizing the SIVA virus, a Golden Age nanotechnology characterized by self-replication and self-assembly. Lord Saladin, the last known remaining Iron Lord, guides players to become the new generation of the Iron Lords and wipe out SIVA. Rise of Iron adds content across the game, including a new campaign, new missions, new Player versus Environment (PvE) locations, new Player versus Player (PvP) maps, a new PvP game mode, player gear, weaponry, a new social space, and a new raid.