Calculus is an important branch of modern mathematics that enable the analysis of dynamic situations and the Theory of Limit is the foundation of Calculus. In this seminar, the speaker Dr. Siu of our Faculty demonstrate the concepts of limit by setting an analysis framework of a game. Furthermore, a full analysis was then carried out and by applying the results of the Theory of Limit, the conclusion of the endings of the game was deduced and drawn. Through this activity, students can learn about the application and power of the Theory of Limit. This experience encourages the students to take an interest in mathematics and could be very helpful in their study.