So I have the itch app, and if I right click on an app, a menu appears with different options. One of them is "open in explorer". If you click that, open the goose file, then click on the green square goose icon, a goose appears. I recommend to make a shortcut and put it on your desktop so you don't have to do this every time you want to see the goose. Hope this is a better explanation. Note that I am on a Windows computer, and not a Mac.