Let me just say that it took me longer than 30 minutes to deliver these dominos. (Sorry, I couldn't resist.) Inside the walnut and monterillo box, there are 32 movable elements ... a complete set of 28 burl dominos plus 4 padauk tiles of various shapes to increase complexity. By tilting and tapping the box as well as nudging dominos and tiles through the holes on each side of the box, you can eventually manipulate the contents into a position so that you can open the box. The dominos were crafted by John Devost.