The document discusses how service design games can act as efficient innovation tools despite games traditionally being inefficient. It defines service design games and their uses in data gathering, concept development, prototyping, and design education. The research question examines how these games accomplish their goals efficiently. Service design games create knowledge by bringing people's background knowledge together and having them understand different perspectives. Reflection is embedded within game mechanics through separating ideation from the problem and enabling self-distanciation. An example game called ATLAS illustrates how game mechanics can foster deeper understanding and allow rules to change to better suit players' needs.