The study examined the impact of exergames (Wii games) and health messages framed using protection motivation theory on children's physical activity beliefs and intentions. A 6-week experiment with 454 children found that playing exergames positively influenced attitudes, self-efficacy, and perceived control, especially when combined with threat-framed health messages. However, coping-framed messages were generally more effective. The findings suggest schools and parents could use exergames to promote physical activity and health messages should be framed to empower rather than threaten children.