In Desktop Steam, go to Library, and at the bottom left corner, click on the plus sign, then Add a Non-Steam Game. Next, we want to add the installed launcher to Steam.Right-click it, go to Manage, then Remove non-Steam game from your library. When the installation process is done, you can remove the from Steam again. Now hit Play to launch the installer, follow the different steps, and wait until it's done.Follow our Proton Steam Deck guide to learn how to install it. Choose an up-to-date flavour of GE-Proton. and under Compatibility, toggle the Force the use of a specific Steam Play compatibility tool option. Don't launch it yet, but instead click on the cog wheel icon, then Properties. It should be called something along the lines of. Now, navigate to the newly added entry in your Steam Library.If you can't find the installer, make sure to show All Files under File type: Navigate to your downloads folder by clicking on Browse, and then go to home/deck/Downloads and add the installer file to Steam. Open up desktop Steam, go to Library, and at the bottom left corner, click on the plus sign, then Add a Non-Steam Game. Next, open up the browser of your choice, go to the Blizzard download page (or search for it on Google), and download the Windows installer.

Click the Steam button, go down to Power, and then Switch to Desktop.

For a native installation: On your Steam Deck, go to desktop mode.

How to install on Steam Deck the native way I personally have it installed the easy way, however. While there shouldn't be any major differences between the different installation methods, sometimes installing the game via Lutris or Bottles gives you better compatibility. In this guide, we'll show you all three options.

In fact, thanks to the efforts of the community, there are now a few ways to install on Steam Deck – either you install it by adding the launcher to Steam, or by using a third-party tool, such as Bottles or Lutris. If you are here for advice on running Diablo IV on the Steam Deck, we wrote a dedicated installation guide here - and if you were looking for the best Diablo IV settings and performance on the Steam Deck, we've got you covered as well.

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