In my study I have participated at the Fifth Dimension / Active Worlds site in Villa Gymnastiken in Ronneby, where I have worked both as an assistant to the project leader and as a researcher, but also as a participant together with the children. The children are working in a virtual world called Femtedim, created in a internet-based program named Active Worlds Education Universe. The Femtedim-world are bridging together two physical worlds in Ronneby and Copenhagen. My main focus is on an intervention that occurred in the 12th of March when the research-team in Copenhagen, which runs the project in Denmark, decided to create a new challenge for the children since some of them started to get bored. They added gravitation to the Femtedim-world, which lead to a few different reactions among the children. Most of the children didn´t like it and were very hostile towards the idea that they would not be able to fly around freely in the Femtedim-world. Some children even refused to log on to the system at the beginning. The change have also resulted in a few popular contests and a hope that the children will cooperate and communicate more in the future.