To do this you need to be on Ios or apple, first open shortcuts, make a new one, name the shortcut exactly to the app name, then put “open app” command in it, put the game for the app, then add to home page, and then get the image with the old icon, remove the original app from Home Screen (deleting the app will make it not work!) and now you have old icons
Also the icon for the 20th anniversary classic icon is inside the project