The game consists of 15 cards. There are three colours and three shapes. The colours are Red, Blue and Yellow, and the shapes Circle, Triangle and Square. Some cards have coloured shapes, three of the cards heve colours with out shape, and three of the cards have shapes without colour. Each of the two players gets 7 cards and the last one is put face up in the middle. In turns, the players play a card with either the same shape or the same colour as the one played last on the pile. When the players have no valid card to play, they pass. When both players pass, the one who passed first can start afresh, playing any card she/he chooses. Only a card with the same shape can be played on a card with a colourless shape. Only a card with the same colour can be played on a card with a shapeless colour. The winner is the player who first empties his/her hand.