Although group culture systems are common in in vitro production systems for animal embryos, it is rarely done in human settings, where individual follow-up of the embryo during the whole culture period is of utmost importance. Recently a CE-labelled culture device has been designed for human embryos, that allow to combine the benefits of both group culture approaches and individual culture. The WOW dish is commercially available by Primo Vision and consists of 9 small microwells on the bottom of the plate, so that the embryos can be cultivated individually in a microwell, but covered by the same drop of culture medium.