Domestic social network game (SNG) before the advent of the gaming market generally large mainstream online games, packaged games, console games, and was the most. However, small businesses and individuals with weakened capital of new games into the market because too many difficulties, the domestic game industry has emerged as a problem to activate. Recent domestic and social networking services (SNS) activation is relatively easy to develop games SNG market opened. In this paper, SNG Flex-based development and overall development process established through the analysis and development considerations by looking at the emerging domestic SNG to the development of new developers who want to develop is to provide direction