This study examines the correlation of online gaming on the psychological well-being, physical activity, nutritional status, and diet quality of adolescent student gamers aged 13–18 in a San Pablo City Science High School. With 171 randomly selected respondents, employing a descriptive, cross-sectional approach, this research gathered data on demographics, gaming preferences, physical activity, psychological well-being, diet quality, and BMI. Findings indicate that the majority of students spend 1–2 hours of online gaming per day, with a frequency of 7 times a week. Most exhibit high diet diversity, moderate physical activity level, normal nutritional status, and psychological status scores of 64–95. Furthermore, Spearman rho (ρ) coefficient values revealed negligible associations between gaming time and psychological status, physical activity, BMI, and diet quality. Similarly, there were no associations found between physical activity level and nutritional status, and between psychological status and nutritional status. Overall, the findings suggest no clear monotonic associations between gaming time and the mentioned variables. Despite concerns, the majority of respondents demonstrated favorable psychological status, normal BMI, and varied diet, albeit lacking in nutrient-dense food groups. These results highlight the importance of studying the complex connections between online gaming and the well-being of adolescents, urging further research for a more detailed understanding