Background and AimsDue to the availability of more sophisticated cell phones with top‐notch gaming functions, the present generation is more active. The available literature indicates that adolescents experience a variety of psychological issues, like low self‐control brought on by an addiction to mobile games. Because of this, the aim of this study is to control the prevalence of, and factors that contribute to, online gaming addiction and its effects on academic performance in Bangladeshi university students.MethodsConvenient sampling was adopted to collect primary data from 399 Bangladeshi university students utilizing a prestructured questionnaire. Descriptive statistics, the χ2 test, binary logistic regression, and multinomial logistic regression were also used to accomplish the study's objective.ResultsAccording to this study, 62.7% of students play online games over 30 h every week. The findings also show that male students are more inclined than female students to show signs of addiction. Also, regular online gaming can result in long‐term problems, and that factor including age, internet access, educational background, and frequency of play can influence the likelihood of these problems. The findings shows that a lower cumulative grade point average (CGPA), less physical activity, and less study time are associated with playing online games for at least 30 h per week. Moreover, the study found that playing online games, playing for long time, and skipping class can all have an adverse effect on a student's academic performance.ConclusionsThe authors recommend that the authorities set up a good entertainment environment and take into account the findings of this article to discourage students from playing online games. Furthermore, encouragement of extracurricular activities such as sports or other pursuits is also essential in assisting Bangladeshi students in overcoming their addiction to mobile games.