Stimulate creativity and imagination with 280 smoothly sanded pine wood planks. No glue, nails, screws, or push buttons are needed. Kapla Stacks are not interlocked. Each Kapla plank is simply stacked on top of the other and held in place solely by gravity and balance. The flat shape and lightweight of the wood encourage confidence, curiosity, and determination. Part of the fun is removing one plank at a time until the whole stack crashes to the ground. Each box includes a guidebook that describes techniques and models. Ideal for individual or group play and projects.