This study aimed to develop and evaluate the usability of a Force and Motion Digital Game using Game-based learning (GBL) among physics student teachers in tertiary education. The research design of this study was developmental research based on the Instructional Design-Digital Game Based Learning model (ID-DGBL model). A group of samples of 21 student teachers were chosen using cluster sampling methods for the usability test of the developed game. A questionnaire instrument was used to collect the usability data of the developed game adapted from the user testing on game. The data collected was analysed using descriptive statistics such as percentage, mean and standard deviation. Based on the findings, the percentage of expert’s agreement for the developed game and questionnaire in the validity process were 100%, while the overall mean score for the usability of the developed game was 4.74 (SD=0.33) including the constructs of Game Usability (GU), Playability (PL), and Learning Content (LC). In the conclusion, the developed game was valid and reliable, as well as suitable to be used as game-based learning for the topic of Force and Motion. In the implication, the developed game was able to complement the conventional learning process by using the game-based learning.