Halo 5: Guardians is a 2015 first-person shooter video game developed by 343 Industries, published by Microsoft Studios, and released worldwide for the Xbox One on October 27, 2015. The game's plot follows two fireteams of human supersoldiers: Blue Team, led by Master Chief, and Fireteam Osiris, led by Spartan Locke. Officially licensed HALO collectible.