Groovy Blocks building toys have pieces that are grooved on all 4 sides for endless construction possibilities. Simply slide the grooved building and link pieces together to create super satisfying, sturdy connections. Large squares create roofs and floors with ease. Hinge pieces make doors and window shutters that really work! It’s a new twist on construction toys!Includes 2 kits:Groovy Blocks 120-piece includes 50 colorful grooved blocks and 70 color-coded links, plus instructions with building tips and ideas.Groovy Blocks 170-piece includes 70 colorful grooved blocks and 100 color-coded links, plus instructions with building tips and ideas.• Construct your own creations or follow building inspiration to make things like a peacock, a furnished loft, a lighthouse and more• Develops creativity and engineering• Builds fine-motor skills and hand-eye coordination