Whether it’s a classic game gathering dust on your hard drive or a recent purchase from another store, Steam makes it easy to consolidate your collection.

While you can launch games not purchased from Steam in its desktop app, games from the Microsoft Store or PC Game Pass need a little help to work.

How to add Star Citizen to Steam You can add non-Steam games to your library via the 'Add Non-Steam Game' button in the bottom left-hand corner of the Steam app.

If Steam then asks you to "add a non-Steam game," choose Browse, then select the Battle.net installer Open Steam while still in Desktop Mode. You should see Battle.net in the Library page.

You can also add the WoW Classic executable as a non-steam game for ease of access, following the same guide to find its root folder. But this may prevent Battle.net from updating correctly.