The article is an attempt to discover how useful the existing literature in field of designing children's playful learning products, is for people who wish to create quality toys and games. It sets out from the right of children to play, and the assertion that plays is crucial for the development of children, to the massive size of the global toy industry. It reviews the literature in terms of its usefulness in terms of information and inspiration, covering all related factors, such as the design process, the nature of play, and the products themselves. The aim is to propose a solution that would improve the situation, and ensure quality play products.