Googolplex was a construction toy made by Arlington-Hews Inc. in the late 1980's. Intended for the educational market, it is a building toy made for children 5 and up. The starter kit includes 255 pieces of various geometric shapes including a triangle, square,and hexagon, various beams and connectors, and treads that can be attached to shapes to form wheels. It features model instructions inside the box. I also have: 400pc. Geometry Kit (unopened), 102pc. Math Kit (unopened), three instructional books, hundreds of assorted pieces. A very cool toy or hobby for the right person.