You will need at least 112 GB to install Black Ops 4.

Call of Duty: Black Ops IV is a payed game, which you need to purchase as a disc (physically) for your Xbox One/One S/Series X or digitally on the Microsoft Store, for any Xbox One/Series X|S console.

It's been made clear that we will get at least 10 years of cross-platform availability for COD, so we're safe for a good while yet, and the game should come out on PS5, PS4, Xbox Series X/S, Xbox One and PC.

If you take a look at the Modern Warfare 3 pre-order information, you'll see that both the PlayStation and Xbox versions of the game are marked as "cross-gen edition"  meaning that you'll not only be able to play them on last-gen consoles, but you'll also have access to the latest version at no additional cost if and ...