Mystery Crochet Link

Have you ever tried a mystery crochet project? The few that I've tried were fun and I like to keep my eyes open for new ones that might be fun to try. Most of them don't show any pictures until the end, if then, but here is one that is posting pictures of each step along the way. I have an idea of what it will be, but I can't guess just how they will be assembling it to make it work if I am right so maybe I'm wrong. Either way it looks fun to me.