While iOS 13.4 added support for mouse support on iOS, the implementation on Steam Link right now is direct control. A specific input style matching FPS games isn’t available as of now. While you use the app, volume from other apps will be lowered as well. I’m interested to see if Valve manages to add accurate mouse and keyboard support for all sorts of games here. People will definitely get more use out of the app on iPad with that. If you missed our initial hands on with Steam Link, check it out here. Do you own a Steam Controller or do you use a PS4 or Xbox One controller on iOS?
Source: TouchArcade