We recommend Piks Small Kit (24 pieces) in the case of a purchase for one single child 3-4 years old. If the child is older (from 5 years), or in case they are two players, Picks Medium Kit (44 pieces) will be more suitable because this offer contains more pieces. From 3 players or for a family, we strongly advise to choose the option Pik's Big Kit (64 pieces) for good times great constructions for all.