Various phenomenons which were not existed before came into being and related problems are increasing as the society became more complex in these days. The social welfare should consider more diversified aspects in this complicated society. We are already living in the information society that can not survive without computers and the internet, and living in the personalized society with the progression of 1 person households. Therefore modern society needs social welfare realization methods which are reflecting the progression of 1 person households and characteristics of the information society. It is different with the previous social welfare formats and it would become an efficient social welfare realization method. How computer games can contribute to social welfare of the modern society is described in this paper.