Simulating real-world scenarios and systems has long been a crucial strategy in game design. This study focuses on integrating real-life systems with game content and mechanics, aiming to establish a comprehensive design process. This process is intended to serve as a reference for game designers, enabling them to create their own games by simulating real-world systems. The effectiveness of this design process was evaluated through testing models constructed from it. The findings indicate that the proposed design process successfully translates real-world systems into game models, thereby allowing players to grasp and accept the gameplay and settings quickly.