Metal Gear Solid V: The Phantom Pain is an action-adventure stealth game developed by Kojima Productions and published by Konami. It was released worldwide for Microsoft Windows, PlayStation 3, PlayStation 4, Xbox 360 and Xbox One on September 1, 2015. It is the ninth installment in the series that was directed, written and designed by Hideo Kojima following Metal Gear Solid V: Ground Zeroes, a stand-alone prologue released the previous year, as well as his final work at Konami.

Is it true that is metal gear solid 5 phantom pain open world?
yes