Mortal Kombat 11 Ultimate Includes: MK11 Base Game; Kombat Pack 1; Aftermath Expansion; Kombat Pack 2. Are you ready for a return of legendary fighting title? Mortal Kombat 11 Ultimate XBOX LIVE Key, developed by NetherRealm is knocking at your door! What Awaits? As per usual in this iconic franchise, you will be greeted by a vast array of unique characters, each of which has different attacks and controls. Mastering them is an art, an extremely violent one at that! Pull off combinations and use everything at your disposal to come up with a way to deal the most damage on your way to winning the bout!