Introduction: The use of serious games is a popular approach to help children with Type-1 diabetes (T1D) learn how to self-manage. Many different game mechanisms exist. However, it is unclear which game mechanisms a serious game should include to teach self-management to children with T1D. Therefore, the aim of this scoping review is to map and describe the game mechanisms used in serious games that teach children with T1D how to self-manage and explain how they contribute to teaching self-management. Methods: A systematic scoping review was conducted to map and describe the important game mechanisms published before 23 September 2020. A comprehensive search was performed in the PubMed, CINAHL, Embase, PsycINFO, Scopus, and Education Database. Relevant literature was selected, synthesized, and reported. Results: Of the 800 articles identified, 18 were included in this systematic scoping review. The game mechanisms used in serious games that teach self-management included narrative contexts, feedback, avatars, simulations, goals, levels, and social interactions. Discussion: This review identified 7 game mechanisms used in serious games that teach children how to self-manage. A serious game is most effective in teaching self-management when it is T1D-oriented and when multiple game mechanisms are combined. However, the most effective combination of game mechanisms has yet to be determined.

Background The complications of type 1 diabetes (T1D) can be delayed or prevented in children with T1D who receive proper self-management education. Smartphone-based serious games are increasingly being used as an effective tool for teaching self-management. When developing a serious game, it is important that the development process be user-centered. Traditionally, different face-to-face methods have been used when children participate in the development process. However, face-to-face data collection is not always feasible. In such situations, distance communication can be used when developing a serious game. Objective The objective of this study is to develop a user-centered smartphone-based serious game that teaches self-management focused on carbohydrate intake in children aged 8-14 years with T1D using distance communication in both the development and evaluation of the game. Methods The development and evaluation of a smartphone-based serious game prototype was inspired by the Lean principles, and a user-centered approach was applied. The development process included 1 expert interview and design workshops with children with T1D. On the basis of the interview and design workshop results, a serious game prototype was developed using Microsoft PowerPoint. The evaluation of the serious game prototype included an interview with a dietitian and a playtest with children with T1D. All data were collected using distance communication. Results A user-centered smartphone-based serious game prototype was developed and evaluated. The expert interview with the dietitian formed the basis for the learning outcomes in the game. Four children and their parents contributed to the preferences, needs, requirements, and ideas for selected parts of the game design. The dietitian evaluated the prototype positively and validated its content and accuracy. The serious game prototype was well-received by the children and their parents during the playtest. The serious game prototype was perceived as a useful and engaging way to learn. However, the difficulty level was not appropriate, and the information was too basic for participants who had been diagnosed over a year ago. The use of digital communication platforms did not cause any problems. Conclusions The smartphone-based serious game prototype has the potential to be a useful and attractive tool for teaching disease self-management. The use of distance communication proved to be a useful approach in the development of a serious game.