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Background  The Problematic Online Gaming Questionnaire (POGQ) is an 18-item self-rated measure designed to assess the degree of problematic online gaming. This study translated the POGQ into Japanese (POGQ-J) and examined the POGQ-J’s factor structure, validity, and reliability for a Japanese population.    Method  A total of 285 undergraduate students (128 males, 157 females,  M  age  = 19.66,  SD  = 1.36) participated in this study.    Results  A confirmatory factor analysis indicated the appropriateness of the POGQ-J’s six-factor structure,  χ  2 (129) = 106.027,  p  < .931;  CFI  = .957;  RMSEA  = .040;  SRMR  = .054. Regarding convergent validity, the POGQ-J was found to be related to the time spent on online gaming ( r  = .309), the Game Addiction Scale for Adolescents ( r  = .824), and Young’s Internet Addiction Test ( r  = .581). Finally, the POGQ-J was found to have a high test–retest reliability.    Conclusions  The POGQ-J is valid and reliable for assessing problematic online gaming in a Japanese population.    Supplementary Information  The online version contains supplementary material available at 10.1186/s13722-021-00273-3.

The validation and reliability of a Japanese version of the Problematic Online Gaming Questionnaire (POGQ-J)