The CQGs are weakly incentivized as follows. The Introductory General Chemistry for Engineering Majors (GenCHEM) course grade comprises contributions, from lab (25%), mid-semester exams (20%), traditional quizzes (25%) and final exam (30%). The overall grade from traditional quizzes could be improved through CQGs by performing better than ~67% of the class on quiz games, with a maximum possible improvement of 2.5 points towards 100 points for the overall course grade.