In this chapter, I explore Cathy’s and Dick’s impact on Japanese researchers, based on their books Designing Games and Simulations: An Illustrated Handbook (1988) by Cathy and Gaming: The Future’s Language (1974) by Dick. These books were translated into Japanese in the early stage of the Japanese simulation and gaming research. They served as a source of shared understanding and knowledge for Japanese researchers in their native language. The availability of these books in Japanese enabled the expansion of our field at a time when it was struggling to develop. Books written in Japanese are more accessible for newcomers in the field. Therefore, these two books have been indispensable textbooks for Japanese researchers. In this chapter, I share some of my personal memories of Cathy and Dick. Other Japanese researchers have had similar experiences; however, different in the details. In addition to my experiences with them, I also elaborate on the huge impact their work has had on Japanese researchers. I would like to conclude that both Cathy and Dick were like lighthouses for Japanese researchers in establishing and developing the simulation and gaming field.