Watch the Mortal Kombat 1 Peacemaker gameplay trailer. Mortal Kombat 1 is the instalment in the critically acclaimed fighting game franchise developed by NetherRealm Studios. DC's Peacemaker joins the fight voiced by John Cena himself. Take a look at the latest trailer to see the debut of his gameplay style, moves, finishers, and more. Peacemaker comes to Mortal Kombat 1 Early Access on February 28 with a full launch on March 6 for PlayStation 5, Xbox Series S|X, and PC. Janet Cage also joins the Kameo roster later in March.