SWAT 4 is a 2005 tactical first-person shooter video game developed by Irrational Games and published by Sierra Entertainment exclusively for Microsoft Windows. It is the ninth installment in the Police Quest series and the fourth installment in the SWAT subseries. In SWAT 4, the player commands a police SWAT team in the New York City metropolitan area. Unlike its predecessor, SWAT 3: Close Quarters Battle, SWAT 4 does not have an overarching plot. Instead, gameplay takes place over a series of mostly unconnected deployments of the player's SWAT team, as they are sent to apprehend criminals, terrorists, gangs, and cults in and around New York City.