The discussion centers on the search for math games designed for adults, moving beyond basic educational tools like multiplication tables. Participants suggest various game concepts, including "Hotel Cardinality," where players manage hotel room arrangements based on mathematical principles. They also mention adapting existing games, such as math pentathlon games, to increase their complexity for adult players. Sudoku is highlighted as a popular option that incorporates mathematical patterns and problem-solving skills. The conversation emphasizes the potential market for engaging, challenging math games aimed at older audiences.