Groovy Blocks inspire young builders to create an endless array of buildings, animals, accessories and more. All blocks and links are engineered to slide together easily from top-to-bottom and side-to-side. Get in the groove for hours of creative fun! The Deluxe set features large square blocks that are great for making floors and ceilings, while small square blocks help create furniture and other details. Paned window blocks add character and charm to any structure.