Received May 15, 2026
Accepted May 21, 2026

Objective: Fertility awareness has become crucial for informed reproductive decision-making, considering the increasing infertility rates, the postponement of parenthood, and the evolution of social norms. Research demonstrates that adolescents have limited fertility knowledge, which can lead to inadequate future reproductive decisions, making adolescence a privileged period for learning about fertility. This study assessed fertility knowledge among Portuguese adolescents using an innovative digital assessment tool, the 12-question serious game “MyFActs!” Fertility knowledge patterns and demographic predictors across multiple fertility dimensions were examined. Methods: A total of 970 adolescents aged 15-18 years old participated in this study. Data were analyzed using ANOVA, chi-square tests, and binary logistic stepwise regression models to examine demographic differences and interdimensional relationships. Results: Participants correctly answered an average of 8.05 questions (SD = 2.04). Significant gender differences emerged, with girls demonstrating superior knowledge in some dimensions, compared to boys. Age-related differences were also observed, with older adolescents (17 and 18 years old) showing greater understanding than younger participants (15 and 16 years old). Binary logistic regression analyses revealed strong interdimensional associations. Conclusion: These findings suggest that fertility knowledge among Portuguese adolescents remains moderate, with persistent demographic disparities that require targeted educational interventions. The interconnected nature of fertility knowledge dimensions supports comprehensive rather than fragmented educational approaches. The successful implementation of the serious game format demonstrates the potential for digital platforms to engage adolescents on sensitive health topics and overcome traditional educational barriers.