1. Introduction to Human Decision-Making and Game Design Understanding how humans make decisions is a complex field that intersects psychology, economics, and neuroscience. Everyday choices—from small habits to life-altering decisions—are influenced by a myriad of factors including emotions, cognitive biases, and social pressures. Game design, as a structured environment with clear rules and incentives, serves as a powerful tool to model and reveal these underlying decision patterns. By simulating real-world