This was a mind boggling little toy. I loved it and played with it for many months to follow. I got it for Christmas one year right after it surfaced. They were in high demand. I remember every kid on the school bus had one at one time. It kept us all intrigued for a number of months. I remember there was only one kid in school that could figure it out and at a fast speed. I think I gave up after a few weeks but tinkered with it for months afterwards.