SWAT 3: Close Quarters Battle is a tactical shooter video game developed by Sierra Northwest and published by Sierra Entertainment for Microsoft Windows-based PCs. It is the seventh installment of the Police Quest series and the first game in the series to be played from the first-person perspective. Unlike many other first-person shooter games, SWAT 3 places an emphasis on realistic police methods and tactics, including proper room clearance, use of less-lethal weaponry, ordering compliance and arresting enemies rather than shooting on sight, and differentiating between authorized and unauthorized use of lethal force.