Clear some more space off your hard drive. Halo 5: Guardians requires players to have up to 60 GB of storage space in order to play the game. That’s according to details on the Halo 5’s box. Some retailers are already breaking the street date and the retail packaging suggests having "up to" 60GB free. This is more than the 46.19 GB file size listed on the Microsoft Store, so perhaps there’s a contingency for a day one patch? Or maybe they're just giving themselves a bit of breathing room. Source - X360A