“…Developing a mobile-based learning media needs appropriate methodology because every mobile device usually has different technical specification such as processors, memory, storage, screen size and resolution as well as operating systems [23]. As used in [24], in this published work, the educational game has several components as story or narration, the environment or world, the problems or challenges to solve, material or content to study, the way how to assess the performance of the student. So that, steps undertaken to develop mobile application were including the development of displays, characters, storyboard, background sound, voice how to speak the Javanese letters, game design, reward systems, and game termination.…”