To celebrate the release of Warzone Firefight next week, the full game of Halo 5: Guardians will be available to download and play FOR FREE to all Xbox Live Gold members from June 29 to July 5 as part of Xbox Live’s “Free Play Days” program. Additionally, Halo 5: Guardians will be on sale for 50 percent off during this same time. There’s no better time to join the Spartan ranks

Xbox Wire article