Increasing globalization and inter connection adolescents are highly attracted to online gaming rather than outdoors gaming. Because of parents less involvements and peers increased involvement and pressure leads to online game addictions later which may have some impacts on their health and academic performance. Therefore, I was pulled to determine the prevalence of online game addiction among adolescents. The book shows the background, need, significance, of online game addiction and objectives, methodologies used in the research, study findings and conclusions of the study.