The purpose of this study is to investigate whether gender traits have any influence on the awareness of cultural codes, the motivation of playing online games, and the degrees of commitment for primary school upper graders. Of 390 students surveyed in Taiwan, a total of 364 questionnaires were returned with 356 being considered valid. The main study findings were summarized as follows: (a) Masculine trait has positive and significant effect on cultural codes, which supports and confirms the mediator role of cultural codes. (b) Feminine trait has positive and significant effect on online games play motivation, which also supports and confirms the mediator role of motivation.