Yes, it is possible to play on multiple platforms (PlayStation®5, PlayStation®4, Xbox Series X|S, Nintendo Switch™ 2, Windows, Mac, Steam) using the same Square Enix Account.

There are two methods to do this.

■If you wish to play on the same character across multiple platforms
Select the same Service Account for each platform when registering your registration code for the Windows, Mac, and Steam versions and when activating the PlayStation®5, PlayStation®4, Xbox Series X|S, and Nintendo Switch™ 2 versions for the first time.
*Please take note that even if you register multiple versions of the game to a single Service Account, you will not be able to play simultaneously on all of those platforms.
*Also, please note that you cannot register the Windows and Steam versions to the same Service Account.

■If you wish to play on different characters for each platform
Select a different Service Account for each platform when registering your registration code for the Windows, Mac, and Steam versions and when launching the PlayStation®5, PlayStation®4, Xbox Series X|S, and Nintendo Switch™ 2 versions for the first time.
*If you select a different Service Account during registration, then you will only be able to play on the platform associated with that account. For example, the service account used for the PlayStation®5 | PlayStation®4 version will only allow you to play on PlayStation®5 | PlayStation®4, whilst the service account used for the Windows version will only allow you to play on Windows.

*You will be unable to change the selected Service Account later, so please use caution when registering your accounts.