Inventors welcome (the weirder the better)! Ingenuity, creativity, and obsession combine in this electronic, puzzle-solving erector set. Now you can design and assemble your own convoluted, computerized contraptions with working pulleys, levers, converyer belts, motors, and more. Move from level to level, constructing cause and effect contraptions to achieve specific goals. There are dozens of working parts you can choose from to create wild, wacky and wonderful machines. The solutions and challenges are unlimited, and with nearly 100 levels of play, you might just reinvent the wheel!