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Article

A Heuristic Method for Evaluating Accessibility in Web-Based Serious Games for Users with Low Vision

1
Department of Software and Computing Systems, University of Alicante, 03690 Alicante, Spain
2
Intelligent and Interactive Systems Laboratory, Universidad de Las Américas, Quito 170125, Ecuador
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(24), 8803; https://doi.org/10.3390/app10248803
Received: 31 October 2020 / Revised: 16 November 2020 / Accepted: 25 November 2020 / Published: 9 December 2020
(This article belongs to the Special Issue Human-Computer Interaction: Theory and Practice)
Nowadays, serious games have become a beneficial resource in the learning process; they are part of our culture and promote social inclusion. Designing accessible serious games is a complete challenge, even more for non-experts. Most existing serious games do not meet accessibility standards because of a lack of methods that include standards and help create more accessible serious games. For this reason, our research presents a heuristic method with three modifications to Giorgio Brajnik’s barrier walkthrough method and based on the Web Content Accessibility Guidelines 2.1 (WCAG 2.1). We defined 28 barriers for the users with low vision and the related impact and persistence variables by defining severity ranges to evaluate accessibility. This method allows measuring the accessibility of web-based serious games; the method proposed in this article can be a good help for non-experts. As a case study, this heuristic method was applied to 40 web-based serious games. The evaluators concluded that serious games should apply WCAG 2.1 to achieve an adequate and inclusive accessibility level. However, this study has limitations; the heuristic method depends on the evaluators’ experience. This work can contribute to studies related to accessibility heuristics in serious games; it can also help construct a software tool that applies WCAG 2.1 and helps experts and non-experts evaluate accessibility in serious games. View Full-Text
Keywords: accessibility; assessment; barrier walkthrough; heuristic; method; serious games; Web Content Accessibility Guidelines (WCAG) 2.1 accessibility; assessment; barrier walkthrough; heuristic; method; serious games; Web Content Accessibility Guidelines (WCAG) 2.1
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MDPI and ACS Style

Salvador-Ullauri, L.; Acosta-Vargas, P.; Gonzalez, M.; Luján-Mora, S. A Heuristic Method for Evaluating Accessibility in Web-Based Serious Games for Users with Low Vision. Appl. Sci. 2020, 10, 8803. https://doi.org/10.3390/app10248803

AMA Style

Salvador-Ullauri L, Acosta-Vargas P, Gonzalez M, Luján-Mora S. A Heuristic Method for Evaluating Accessibility in Web-Based Serious Games for Users with Low Vision. Applied Sciences. 2020; 10(24):8803. https://doi.org/10.3390/app10248803

Chicago/Turabian Style

Salvador-Ullauri, Luis, Patricia Acosta-Vargas, Mario Gonzalez, and Sergio Luján-Mora. 2020. "A Heuristic Method for Evaluating Accessibility in Web-Based Serious Games for Users with Low Vision" Applied Sciences 10, no. 24: 8803. https://doi.org/10.3390/app10248803

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