- create a shortcut link on desktop for the specific game in epic launcher
- Go to the properties of this shortcut and copy the url For Tony Haw's Pro Skater 1+2 its: "com.epicgames.launcher://apps/Guppy?action=launch&silent=true"
- Go to steam and add a non steam game to your lib
- Search for '''cmd.exe'''
- Change the launch properties to /k start com.epicgames.launcher://apps/Guppy?action=launch^&silent=true & exit
- Change the name and icon if you will
- done
With these steps, it was possible to use the steam controller and overay in Tony Hawk's Pro Skater+ 1+2.
Close the Epic Games Launcher (from taskbar). Launch the Epic Games Launcher via Steam (add a non-Steam game), then launch the game from that Epic Launcher instance. With these steps, the game works, as does the Steam overlay (which enables support for multiple Steam controllers to be detected).