Builder Game (circle & square)

I'd surf on the internet and searched a reto games. I had seen circle builder game what was very famous when I was a child. I checked here but I did not find, so I have designed and now I would like to share for you. Youtube: https://www.youtube.com/watch?v=hQ4oGadUNzE&t=22s
This game is offered for 3-5 years old children. This game develope of the childrens creativity observation and dexterity.
One pack contain 6x6x6x6x6 (different color)
Circle diameter 100mm and thickness 3mm
Square 100x100x3mm ( length and width thickness finally was changed,)