The purpose of this study was to examine the differences of psychosocial characteristics according to the level of addiction and engagement in internet gaming of adolescents. The data were collected from 206 adolescents, who were divided into two groups, which were consist of target sample(game users who were nominated as frequent customers by the owners of PC room) and general sample. An engagement factor showed no statistically significant correlation with psychosocial characteristics, whereas an addiction factor had a significant correlation with escaping from the self and social support perception. Three group could be divided according to the level of engagement and addiction, and these groups significantly differed on escaping from the self and appraisal support. Based on these findings, implications for practice and limitations of this study were discussed, together with some suggestions for further research.