With the population of social platform, such as Facebook, Twitter and Plurk, there are lots of users interest in playing game on social platform. It's not only the game style they want to play, but also high interaction with other users on social platform. Hence, the development of social network makes social games as a teaching tool becomes an emerging field, but in order to use the social network games for teaching, it needs to understand the game flow as an appropriate reference to be judged. In this paper, we use simulation games and social utility games of Facebook as examples. Using the flowcharts and the triangulation methods theory to analyze the characteristics of the flows by finding verbs and goals, and obtaining the differences by comparing social behavior, accumulate of experience, items collection system and tasks.