Abstract: The title of this research is Deviant Behavior of Youth (A Case Study of Teens Who Likes to Play Online game in Internet Cafes Mario Bross Kota Baru Pontianak). The problem in this research is How Deviant Behavior of Youth (A Case Study of Teens Who Likes to Play Online game in Internet Cafes Mario Bross Kota Baru Pontianak). The aim of research to determine the deviant behavior of teenagers who like to play online games on the internet cafes Mario Bross Kota Baru Pontianak. Forms of research in this study is a qualitative descriptive method. Data collection techniques such as observation, interviews, and documentation. Data collection tools such as manual observation, interview, and documentation. The results showed the deviant behavior in adolescents who like to play online games on the internet cafes Mario Bross Kota Baru Pontianak. Keywords: Deviant Behavior, Adolescent, Game Online
