This study investigated the roles of sex, age, and parent-child communication in moderating the association between digital game violence and direct aggression in a two-year longitudinal study. Finnish 12- and 15-year-old adolescents (N = 316) participated in the follow-up survey. As hypothesized, digital game violence was linked to direct aggression both longitudinally and synchronously, and the link was moderated by parent-child communication in interaction with sex and age. Results suggest that the moderating role of parent-child communication changes with increasing age. Poor parent-child communication may be one of the factors in an adolescent's development that may strengthen the negative effects of digital game violence, but even good parent-child communication does not necessarily protect the adolescent in the long run. Digital game violence seems to be one of the risk factors of increased aggressive behavior. (Contains 5 tables and 2 figures.)