With the HoloMoves app Torenhoog (Towering), children who are rehabilitating are challenged in a tough and challenging exercise game. In Towering, players try to build a city and towers as high as possible. The game has multiple levels and the possibility to play together (with 2 HoloLenses). This HoloMoves application is a Class I medical device in the European Union according to the Council Directive Rule 12 complying with the applicable requirements of the Medical Device Directive 93/42/EEC.