MAGFORMERS Classic 30 Piece Set is the basic set to build a ball, a house, or a building. You can even build a microphone with the MAGFORMERS award winning 30 piece Classic Set. This is the perfect set for the beginning user. It comes with basic square and triangle shapes. You can follow the ideas provided, or let your imagination be your guide. This set is available in two color schemes, yellow/blue or red/purple, which allows for uniform building. The intelligent magnetic design allows for fun that is only limited by your imagination.