Saints Row IV is a 2013 action-adventure game developed by Volition and published by Deep Silver. It is the sequel to 2011's Saints Row: The Third, the fourth installment of the Saints Row series, and the final main installment in the original series that began with the original game. The game's open world nature allows players to freely explore a simulation of the fictional city of Steelport while completing main and side missions at their leisure. It incorporates science fiction elements, and continues the series' reputation for over-the-top parody. The single-player story follows the same player-created character from the previous games, who is elected President of the United States after thwarting a terrorist threat. Five years into their governance, they find themselves trapped in the Steelport simulation along with members of their gang, the 3rd Street Saints, after an alien empire known as the Zin attack the Earth and capture them. With help from some Saints who managed to escape and hacked the simulation to give them superpowers, the player attempts to rescue their captured friends, escape the simulation, and defeat the Zin.