Videogames including bodily movement have recently been promoted as tools to be used in school to encourage young people to be more physically active. The purpose of this systematic review has been to explore the arguments for and against using exergames in school settings and thus facilitate new insights into this field. Most of the arguments for and/or against the use of exergames can be organised in relation to health and sport. In relation to health, the dominant theme is about fitness and obesity. In relation to sport, the two main themes were skill acquisition, and exergames as an alternative to traditional PE. The idea why Wii teach PE in schools is that children are becoming more obese, which in turn threatens the health of the population. Schools seem to be an appropriate arena for this intervention, and by using exergames as an energy consuming and enjoyable physical activity a behaviour modification and the establishment of good healthy habits is argued to be achieved.