Xbox Series X or S
Playable: Internal SSD or a Storage Expansion Card
USB library: A USB drive can store the game, but you must move it back before play
Nintendo currently lists an estimated 84.9GB on Switch 2. Xbox and PS5 retail sizes remain unpublished. Pick your console and check MW4 with the games you want installed.
MW4 will already be selected. Switch 2 keeps 84.9GB labeled as an estimate, and the Xbox and PS5 planners keep their temporary allowance separate from a final size.
Looking for the old beta numbers? They are preserved below as historical measurements, separate from the retail game.
Current Switch 2 estimate
Nintendo labels 84.9GB as required space estimated, so it may change before launch. Compare it with the free space and games already in your setup before buying microSD Express.
Observed beta listing record; this was not the retail game size
View the PS5 size recordMicrosoft package maximum for the beta; selected content could make it smaller
View the Xbox catalog dataActivision's beta SSD-space requirement, not a measured retail download
Activision PC requirementsHistorical beta behavior; no existing Call of Duty installation was required
Activision install guideWhy the Xbox number can look different
Xbox supported selectable beta content, so the Manage screen could show a smaller download than the 65.8GB package maximum. That explains conflicting beta reports. It does not establish how large the retail Xbox package will be.
A missing size does not mean you can do nothing. Work from the space your console has now.
Use Manage Files for your current Call of Duty install, then check console storage again. Do not buy from the old free-space number.
See how Call of Duty files workThe storage checker already includes Modern Warfare 4 as an unpublished-size game. It keeps the size marked unknown and lets you choose the planning allowance yourself.
Plan MW4 with my gamesChoose playable storage if you want the game ready to launch. Choose a USB library drive only if you are comfortable moving current-generation games back before play.
Compare current storage pricesPlayable: Internal SSD or a Storage Expansion Card
USB library: A USB drive can store the game, but you must move it back before play
Playable: Console storage or a compatible installed M.2 SSD
USB library: A USB drive can store the game, but you must copy it back before play
The beta sizes are historical evidence, not retail package sizes. Switch 2's current 84.9GB estimate is tracked separately above; Xbox and PS5 remain pending.
Expansion Bay is independent and is not affiliated with Activision, Microsoft, or Sony. Product and platform names are used only to explain compatibility.