Run through the Battle.net installation as you would on your desktop. By
Diablo 4 Gold default, the installation will happen on your onboard storage, but alternatively, you can store the app and your games on a microSD card by changing the save destination. On my Steam Deck, it’s nested within the “Z” directory. After clicking into that, expand the “run” folder, then the “media” folder. Lastly, you’ll click the name attached to your microSD card. In our case it’s “mmcblk0p1.” If you mess up at this stage, simply delete the installer from your Steam library, and start the process over.
Once the installation is complete, you’ll be prompted to enter your login credentials, after which you can follow the prompts to install Diablo 4 as you would on your desktop PC. If your Steam Deck’s SSD doesn’t have enough free space, you can change the installation location of the game to your removable storage using the same process as before.
Almost done. With Diablo 4 installed in Battle.net, click the settings icon next to the blue “Play” button, then select “Show in Explorer.” This will open a small window that contains the game’s files. Copy the destination directory by highlighting the text in the bar, right clicking it, and selecting “copy” (in our case, it’s Z:\run\media\mmcblk0p1\Diablo 4), then go to your desktop.
Open the file explorer we used earlier (the folder icon in the taskbar called Dolphin), then paste the
Diablo 4 Gold buy destination into the bar at the top of the file explorer to quickly find where Diablo 4 is installed. Open the Diablo 4 folder, scroll down a little, and you should see a file called “Diablo IV.exe,” right-click on it (or, again, as an alternative, you can tap the left trigger), and select “Add to Steam,” just like we did with the Battle.net installer.