This study aims to determine (1) the process of developing TCG (Trade Card Game) learning media to increase learning motivation on solid geometry material for eighth-grade students at SMP Negeri 1 Tinggimoncong, and (2) the quality of TCG learning media in terms of validity, practicality, and effectiveness. This research employs the Research and Development (R&D) method with the ADDIE development model consisting of five stages: Analysis, Design, Development, Implementation, and Evaluation. The developed product is a TCG-based learning media for solid geometry material. The subjects for the trial are 31 students from class VIII.4 at SMP Negeri 1 Tinggimoncong. The instruments used include expert validation sheets, observations of teacher and student activities, student learning motivation questionnaires, teacher response questionnaires, and learning outcome tests. The research results show that: (1) The validity of the TCG learning media is in the "Very High" category with a score of 0.96. (2) The practicality of the media is classified as "Very Positive" with a teacher response rate of 91% and a teacher activity observation score of 4 ("Very Good"). (3) The effectiveness of the media is indicated by the student learning motivation of 90.6% ("High"), with an increase of 41.8% from the initial motivation (48.8%), student activity at 85% ("Very Good"), and learning completeness reaching 80.5% in a classical setting. Thus, the development of this TCG learning media has been proven to be valid, practical, and effective in enhancing student motivation and learning outcomes in spatial geometry material.