The notion of aesthetic unity has garnered substantial attention within the realm of contemporary art, particularly in the domains of film and gaming. These creative mediums encompass a multitude of design elements, making the pursuit of aesthetic unity all the more crucial. In the context of traditional 3D action games, achieving aesthetic unity holds paramount importance in crafting captivating and immersive experiences. Notably, combat systems play a pivotal role in attaining aesthetic unity as they often serve as the primary avenue for player interaction. This research delves into the concept of aesthetic unity in action games, with a specific focus on strategies employed in traditional 3D action game design. Through interviews with seasoned developers possessing extensive research and development experience, this study utilizes the interview research methodology to extract valuable insights and summarize the strategies employed in the development process. Additionally, the study underscores the significance of development models, gameplay design, and other essential design elements, such as plot, in fostering aesthetic unity within the realm of 3D action games.