It will be playable from June 29 until July 5 as part of the Xbox Live Free Play Days program. Halo 5’s new Warzone Firefight mode is set to launch on June 29 as a free downloadable update. Newcomers will have an entire week to try out the game so long as they hold a valid Xbox Live gold membership. You can check out the new content to be included in Warzone Firefight below: New Game Mode – Warzone Firefight: Warzone Firefight is, by far, the biggest content release since the launch of Halo 5: Guardians!