<![CDATA[This study aimed to design a mobile game-based learning media, particularly for the Earth structure topic for eighth-grade students at SMPN 2 Kebakkramat, and to determine its feasibility as a learning medium. The study employed the Research and Development (R&D) method using the ADDIE development model. Data were collected through observation, interviews, questionnaires, and documentation. Functional testing was conducted using Black Box Testing, while the feasibility assessment involved media experts, subject metter experts, and educators. All validation results were analyzed using a Likert scale. The results showed that all game functions operated properly without any issues. The mobile game obtained a feasibility score of 88% from the media expert, categorized as (very feasible), 94 % from the subject metter expert, categorized as (very feasible), and 88% from educators, also categorized as (very feasible). The novelty of this study lies in the design of a mobile educational game using Construct 3 that integrates Earth structure material with quizzes as a learning medium that can be accessed on Android devices. Therefore, it can be concluded that the mobile game-besed learning media, (EduTerra) is considered very feasible for use as a learning medium for the Earth structure topic. ]]>
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