Click the green flag. Then click anywhere on the screen to find a surprise. Try to find 4 surprises.
To meet this unstuck challenge I made 4 transparent rectangles that cover the screen. Each rectangle has a broadcast to hidden sprites to show. If I had more time I would try to figure out how the rectangles can be 98% transparent the way they are after the green flag is clicked. I'd also make smaller rectangles to have more surprises, and maybe have other surprises and scenes in store. :-)