Penelitian ini bertujuan untuk mengembangkan media pembelajaran monopoli matematika berbasis komputer pada materi sistem persamaan linear dua variabel. Model pengembangan yang digunakan dalam penelitian ini adalah model ADDIE (Analysis, Design, Develop, Implement, and Evaluate). Kegiatan pada tahap analisis berupa analisis kebutuhan, analisis kurikulum, dan analisis siswa. Tahap perancangan berisi kegiatan merancang kerangka dan sistematika permainan monopoli serta penyusunan instrumen penilaian permainan monopoli. Pada tahap pengembangan, kegiatan yang dilakukan adalah pengembangan permainan monopoli sesuai dengan desain yang telah ditentukan pada tahap sebelumnya, evaluasi permainan monopoli oleh ahli materi dan ahli media. Pada tahap implementasi berisi kegiatan uji coba kelompok kecil permainan monopoli dalam pembelajaran materi sistem persamaan linier dua variabel pada kelas VIII salah satu Madrasah Tsanawiyah di Pasuruan Jawa Timur. Hasil penelitian menunjukkan kriteria valid dengan skor rata-rata 3,57 untuk ahli materi dan 3,71 untuk ahli media, kriteria praktis dengan skor rata-rata 3,60 oleh praktisi ahli dan 3,25 angket respon siswa, kriteria efektif dengan rata-rata skor ketuntasan hasil belajar 100%. Berdasarkan hasil penelitian, permainan monopoli dapat digunakan sebagai media pembelajaran di sekolah karena telah memenuhi kriteria valid, praktis, dan efektif.   This study aims to develop a computer-based mathematics monopoly learning media on the material of a two-variable linear equation system. The development model used in this study is the ADDIE (Analysis, Design, Develop, Implement, and Evaluate) model. Activities at the analysis stage are in the form of needs analysis, curriculum analysis, and student analysis. The design stage contains activities to design the framework and systematics of the monopoly game and the preparation of the monopoly game assessment instrument. At the development stage, the activities carried out were the development of a monopoly game according to the design determined in the previous stage, evaluation of the monopoly game by material experts and media experts. At the implementation stage, it contains a small group trial activity of the monopoly game in learning the material for a two-variable linear equation system in class VIII of one of the Madrasah Tsanawiyah in Pasuruan, East Java. The results showed valid criteria with an average score of 3.57 for material experts and 3.71 for media experts, practical criteria with an average score of 3.60 by expert practitioners and 3.25 student response questionnaires, effective criteria with an average score of 3. the average score for learning outcomes is 100%. Based on the results of the research, the game of monopoly can be used as a medium of learning in schools because it has met the criteria of being valid, practical, and effective.