TECTI turns cube building into motion-filled play. Interlocking cubes hinge and flex so your designs fold, twist, and reshape with a satisfying tectonic wobble. Build one of the suggested structures or experiment freely, then pop in the keystone cube to lock a favorite form in place before taking it apart and starting fresh. Combine multiple sets to create bigger, more complex superstructures that invite curiosity, creativity, and hands-on tinkering for builders of all ages.