Today, with the widespread use of technologies such as computers, smart phones and the internet, access to digital games is increasing and the effects of playing digital games are becoming more evident day by day. Especially, adolescent high school and university students appear as the most important risk group for internet gaming disorder as well as other addictions. There is a need for studies that will guide the prevention and intervention studies and determine the prevalence and etiology of internet gaming disorder, especially in young individuals who are in the risk group. In this study, it is aimed to determine the frequency of internet gaming disorder and effective factors in high school and university students. The research is a cross-sectional type study conducted with a total of 1350 participants studying at Gazi University Faculty of Medicine, Faculty of Health Sciences and two high schools in Sincan and Çankaya. The data source of the research is the questionnaire form that includes socio-demographic information, some health-related characteristics of the participants, information evaluating game addiction and the Internet Gaming Disorder Scale Short Form (IGDS9-SF). The prevalence of possible internet gaming disorder in the study was 5.6%. In the logistic regression analysis, it was observed that the factors affecting internet gaming disorder were being male (OR:2,850), separation or death of parents (OR:4,127), being a single child (OR:4,560), not doing physical activity (OR.3,165), lack of self-confidence (OR:3,029), poor family relationships (OR:5,427), preferring online games (OR.7,034). It is important to plan intervention studies and raise awareness for internet gaming disorder, which has become an important public health problem when evaluated with its results.