This article describes how different literatures have suggested the positive role of educational games in students' learning, but it can be hard to find an existing game for student learning. Some lecturers may try to develop a game for their courses, but there were not many effective models for educational board game development. The authors have formed a team for developing a game with the purpose of teaching Search Engine Optimization (SEO) in an undergraduate course, and observed the design meetings and the game trial sessions. They have developed a spiral educational game development model based on the observation and the game deliverable, and have provided other suggestions for developing educational games based on the students' and designers' feedback.