To add any application or executable to rainway add a shortcut to it in Steam as a “Non-Steam Game” with a valid igdb game name.
First add the executable to steam through steams “Add a game” => “Add a Non-Steam Game” menu system. This menu is located in the bottom left of the steam window when viewing you’re games library.
If steam doesn’t auto populate the list of executables it can add you may need to browse for the .exe you are trying to add by hitting the “Browse” button.
Now that the game is in your library, right click on it in the steam library menu, go to properties, and rename the shortcut to any game not already in your library as its full name from igdb Ideally choose a game that has been out for a while, spelling and capitalization matter and is not already in your library!