To make learning games effective, four basic principles of learning through play are needed. These principles are challenge, exploration and testing of one's skills, exploration of roles and identities, and application and immediate feedback. The challenge is to move the player forward by learning through their mistakes. The player should demonstrate his or her skills in the process. Since the virtual world does not contain "real" consequences, the player can interact more experimentally and test his skills in the virtual space. In addition, the player can look at a problem from different perspectives because he can slip into different roles. This also creates new challenges, which encourage the player to master them creatively. Immediate feedback also plays an important role in increasing learning success. Furthermore, through the direct application of what has been learned, player success can be achieved, which motivates the player to constantly improve. You can find out more about this in the article "Educational Games - Possibilities and Limits of Learning through Play".