Background and Aims: Gaming disorder (GD) is a prevalent and complex issue that has recently been recognized as a condition that impairs mental health, underscoring the urgent need for early prevention measures. This evaluation study examined the effectiveness of the Digital Netizen Alliance (D.N.A.) program, a new multicomponent positive psychology program for preventing GD and bolstering mental wellness among Chinese children. Methods: Drawing on gamification and positive psychology principles, the program builds four key positive skills collectively referred to as the P-A-G-E framework: psychological resilience, active coping, growth mindset, and emotion regulation. A randomized controlled trial was conducted with 264 primary school pupils attending fourth, fifth, or sixth grade in Hong Kong (63% female; mean age 5 10.83, SD 5 1.18). Results: The findings revealed that participation in the program effectively promoted active coping, a growth mindset, and emotion regulation. Moreover, program participation alleviated GD symptoms and reduced negative affect. These desirable changes were fully explained by the P-A-G-E framework. Discussion and Conclusions: The new D.N.A. program, which cultivates the positive psychology skills specified in the P-A-G-E framework, facilitates favorable psychological changes among children. These results emphasize the importance of using multicomponent frameworks for interventions targeting GD prevention.  Kulcsszavak: gaming addiction, gamification, problematic gaming, intervention, mental health, well-being