Users of smart-phone based social network game are rapidly increasing. However, there are few researches for smart-phone based social network game. In this paper, we analysed factors affecting the user satisfaction for smart-phone based social network games through empirical testing. As a result, convenience and social presence were found to have positive effects on the user satisfaction of social network game. This study provides practical suggestions for developers of social network game to invigorate the smart-phone based social network game market, such as improved additional investment for simple game interface, easy game rule, additional interactive services.