Power blox standard set - build a shiny cat with flashing lights, or use with your existing lego to add lights. Stimulate young minds with creativity, imagination and science. Light up your 3d circuits with our unique power block. Great addition to any steam curriculum. Patented technology you won't find in any other toy brick set. No wires! Build circuits directly into your projects. Use your own imagination to create awesome structures. Compatible with other toy brick sets, including LEGO.