Through one-to-one and face-to-face interviews and focus groups, it is found that the life cycle of an online game can be divided into four stages—Trying Stage, Indulging Stage, Retaining Stage, and Leaving Stage—on the basis of how the players like or indulge in as well as how much time and energy the players spend on it. The online-game life cycle contains not only the above typical four stages but also some other exceptional forms.