Modeled Sustained Silent Reading (MSSR) is one of significant approaches for pupils to developing early literacy. To promote MSSR, different follow-up activities are used. Due to the game characteristic of active participation, digital games are potentially regarded as a promising means to promote reading activity. Thus, the purpose of this study is to develop a management-based game, My-Bookstore, to investigate its feasibility and influence. My-Bookstore was used by primary school students, and some preliminary observations were discussed in this study.