31 Frederic Adler Carolin Dehne Gabi Reinmann 2004 Game-Based-Learning, "Blended Learning" This paper gives an overview about the goals and the current state of affairs regarding the development of a blended learning environment for micro-system engineering. First of all, the special challenges for university teaching and the reasons for using blended learning as well as the reasons for integrating game-playing elements are outlined. Next is described to what extent the idea of game-playing based learning is promising for micro-system engineering and both terms of game-playing and some emotional-motivational concepts - equally important for game-playing and learning - are analyzed. A goal of this project is - and this is to become clear in a third step - the development of a knowledge-based game software and its integration in a blended learning environment - this concept has likewise to be compiled. The article ends with references to multiple theoretical perspectives of this concept, which are necessary in the context of the design-based research approach.