AbstractThe aims of this study were to develop and validate Bio-GamyX module in teaching and learning Biology for form four students. This module was developed for the topic Chemical Composition of the Cell based on the integration of Sidek and Jamaludin’s Model and the Five Steps of Applying Gamification in Education proposed by Huang and Soman. The process of developing this module involved the preparation of module draft, experts’ reviews and calculation of content validity of the module. During this process, the module draft was given to three subject matter experts consist of academicians and practitioners to be reviewed. Several recommendations were identified and amendment was done accordingly. The amended module was then evaluated for its content validity. The percentage of experts’ agreement obtained for this module ranged from 77% to 85%. This finding shows that Bio-GamyX module has a good content validity. This finding reinforces the use of gamification approach in the design .....