Tara, if you want to get feedback on a storygame without publishing it you're more than welcome to put the link the in the Writing Workshop. That's what it's for.
As for that link actually working (the one that you post, that is) - you'll have to have the "Sneak Preview" box checked for the storygame you want to show, otherwise other people won't be able to view it (instead they'll just be redirected to the Storygames main page). You can turn it on by going into Game Options if you're using the old editor or through Storygame Properties if you're using the advanced one.