Background Enjoyment plays a key role in the success and feasibility of serious gaming interventions. Unenjoyable games will not be played, and in the case of serious gaming, learning will not occur. Therefore, a so-called GameFlow model has been developed, which intends to guide (serious) game developers in the process of creating and evaluating enjoyment in digital (serious) games. Regarding language learning, a variety of serious games targeting specific language components exist in the market, albeit often without available assessments of enjoyment or feasibility. Objective This study evaluates the enjoyment and feasibility of a tablet-based, serious story-listening game for kindergarteners, developed based on the principles of the GameFlow model. This study also preliminarily explores the possibility of using the game to foster language comprehension. Methods Within the framework of a broader preventive reading intervention, 91 kindergarteners aged 5 years with a cognitive risk for dyslexia were asked to play the story game for 12 weeks, 6 days per week, either combined with a tablet-based phonics intervention or control games. The story game involved listening to and rating stories and responding to content-related questions. Game enjoyment was assessed through postintervention questionnaires, a GameFlow-based evaluation, and in-game story rating data. Feasibility was determined based on in-game general question response accuracy (QRA), reflecting the difficulty level, attrition rate, and final game exposure and training duration. Moreover, to investigate whether game enjoyment and difficulty influenced feasibility, final game exposure and training duration were predicted based on the in-game initial story ratings and initial QRA. Possible growth in language comprehension was explored by analyzing in-game QRA as a function of the game phase and baseline language skills. Results Eventually, data from 82 participants were analyzed. The questionnaire and in-game data suggested an overall enjoyable game experience. However, the GameFlow-based evaluation implied room for game design improvement. The general QRA confirmed a well-adapted level of difficulty for the target sample. Moreover, despite the overall attrition rate of 39% (32/82), 90% (74/82) of the participants still completed 80% of the game, albeit with a large variation in training days. Higher initial QRA significantly increased game exposure (β=.35; P<.001), and lower initial story ratings significantly slackened the training duration (β=−0.16; P=.003). In-game QRA was positively predicted by game phase (β=1.44; P=.004), baseline listening comprehension (β=1.56; P=.002), and vocabulary (β=.16; P=.01), with larger QRA growth over game phases in children with lower baseline listening comprehension skills (β=−0.08; P=.04). Conclusions Generally, the story game seemed enjoyable and feasible. However, the GameFlow model evaluation and predictive relationships imply room for further game design improvements. Furthermore, our results cautiously suggest the potential of the game to foster language comprehension; however, future randomized controlled trials should further elucidate the impact on language comprehension.

BACKGROUND Game enjoyment plays a key role in the success and feasibility of digital serious gaming interventions. Unenjoyable games will not be played and in the case of serious gaming, learning will not occur. Given this importance, a so-called GameFlow model has been developed, intending to guide (serious) game developers in the process of creating and evaluating enjoyment in digital (serious) games. Regarding language learning, a variety of serious games, targeting specific language components, exist on the market, albeit often without available assessments of enjoyment or feasibility. OBJECTIVE The current study evaluates enjoyment and feasibility of a tablet-based serious story listening game for kindergarteners, developed based on the principles of the GameFlow model. Given the focus on story listening, this study additionally aims at preliminary exploring the possibility of the game to foster language comprehension. METHODS Within the framework of a broader preventive reading intervention, 91 five-year old kindergarteners at cognitive risk for dyslexia were asked to play the story game for 12 weeks, six days per week, either combined with a tablet-based phonics intervention or tablet-based active control games. The story game mainly involved story listening and rating, and responding to content-related questions. Game enjoyment was assessed through post-intervention questionnaire outcomes, a GameFlow-based evaluation, and in-game story rating data. Feasibility was determined based on in-game general question response accuracy (QRA), reflecting the difficulty level, attrition rate, and final game exposure and training duration. Additionally, in order to investigate whether game enjoyment and difficulty could influence feasibility, final game exposure and training duration were predicted based on in-game initial story ratings and initial QRA. The possible growth in language comprehension was explored by analyzing in-game QRA as a function of game phase and baseline language skills. RESULTS Questionnaire and in-game data suggested an overall enjoyable game experience. The GameFlow-based evaluation however, implied room for improvement concerning the game design. General QRA confirmed a well-adapted difficulty level for the target sample. Moreover, despite an overall attrition rate of 39%, 80% of the participants still completed 90% of the game, albeit with a large variation in training days. Higher initial QRA resulted in a significantly higher game exposure (P<.001) and lower initial story ratings significantly slackened the training duration (P=.003). In-game QRA was positively predicted by game phase (P=.004), baseline listening comprehension (P=.002), and vocabulary (P=.010), with larger QRA growths over game phases in children with lower baseline listening comprehension skills (P=.044). CONCLUSIONS Generally, participants experienced the story game as enjoyable and feasible. Yet, the GameFlow-model evaluation and predictive relationships imply room for further game design improvement. Additionally, our results cautiously suggest a potential of the story game to foster language comprehension. Yet, future randomized controlled trials need to elucidate the actual gaming impact on language comprehension. CLINICALTRIAL S60962