Marble ball puzzle

Cool game for kids.

After printing need:

• 16 round magnets 3x6mm (8 magnets for each side), I used super glue to fix them. 
• 4 marble balls, diameter ~16mm ( one for each level).

Parts needs support as marked on picture.
After printing pin with brim, clear it good. 

P.S.  Here are some aliexpress links for similar toys:
        https://www.aliexpress.com/item/1005003058139499.html
        https://www.aliexpress.com/item/1005003062358033.html
        https://www.aliexpress.com/item/1005002967710404.html