Background <p>Type 1 diabetes poses substantial self-management challenges for children. Gamified interventions are a promising strategy to support this population, yet evidence on their design, implementation, and reported outcomes remains scattered. This scoping review aims to systematically map the international evidence on gamified interventions for children with T1DM, focusing on their characteristics, delivery, and outcomes.</p> Methods <p>Following the Arksey and O’Malley framework, this scoping review systematically searched six databases (PubMed, CINAHL, Embase, Scopus, Cochrane Library, Web of Science) from January 1, 2010, to January 25, 2026. We also examined reference lists and performed citation tracking.</p> Results <p>Twenty-three of 762 retrieved articles were included. Interventions were primarily delivered via mobile applications (52%) and websites (17%). The most common gamification elements were goal setting, challenges, and fun (each 96%); social features were less frequent (35%). Most studies (70%) lacked an explicit theoretical framework, and intervention durations varied widely. The interventions demonstrated benefits for glycemic control, self-management, knowledge, and psychological distress, but inconsistent effects on quality of life. They were generally feasible, usable, and acceptable.</p> Conclusion <p>Gamified interventions represent a promising approach to T1DM management in children, aligning well with their developmental needs. However, current studies often lack a theoretical foundation and evidence of sustained benefits. Future work should prioritize theory-driven design and rigorous long-term evaluation.</p> Protocol Registration <p>This review protocol is registered on the Open Science Framework (OSF) and accessible via the following link: <a href="https://doi.org/10.17605/OSF.IO/MN6AE">https://doi.org/10.17605/OSF.IO/MN6AE</a>.</p>