Designed as a children’s game in 1970, Bruno Munari’s Plus or Minus is an engrossing exercise for any age. The set consist of 72 cards, each with a different image. Forty-eight cards have transparent backgrounds, allowing them to be layered over each other to create evolving and compelling scenes. Trees, clouds, bicycles, animals and more are represented. Deal the cards out and let each player add a layer, creating increasing complex stories. Suitable for ages three and up.