From rules booklet: "Colour and pattern recognition and a bit of luck with the dice are what you need to collect the lovely brightly coloured butterflies. This game goes a step further and not only promotes colour recognition but also presents the secondary colours orange, green and purple in a playful manner. Learning colours with the aid of the transparent colour is 'child's play' Each player is given a butterfly. The butterfly cards are stacked face down on the table and the dice is put down beside it. The butterfly wings are spread out on the table and each player may take a butterfly card and put it down face up in front of him. The youngest player throws the dice. If the colour or pattern that comes up on the dice is shown on the butterfly card, he may put the wings of that colour onto the butterfly. Each butterfly consists of three pairs of wings, which can be a colour with two patterns or two colours with one pattern. On some butterfly cards, the colour or pattern must be mixed to get the right colour or the right pattern."