The development of computer technology and the internet promote the development of emerging industries of educational games. After understanding the value of educational games, educators hope to find a different and more enjoyable way to help primary school students learn new English vocabulary. On the other hand, with the popularity of mobile smart devices, researchers intend to employ the convenience of mobile ubiquitous learning for primary school students. This chapter attempts to design and develop an English vocabulary memory educational game for primary school students based on the Android platform. After reviewing the related research on mobile learning and educational games, the chapter analyzes the system design process and application of the educational game. This research has the significance of solving some of the problems faced by students remembering English words. The researchers hope to provide some references and help for future educational game designing based on the Android platform.