Click Add Selected Programs and the game will now be listed in your Steam library. Go back to Gaming mode and it will show up in the main Steam Deck library under the Non-Steam tab.

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.

There's a treasure trove of customization options within Steam that can turn a bland library into something unique to you.

We're having a look a whether the ASUS ROG Ally can run Steam games, so you can take your gaming library on the go.