Diegetic Sonification for Low Vision Gamers

There are not many games designed for all players that provide accommodations for low vision users. This means that low vision users may not get to engage with the gaming community in the same way as their sighted peers. In this thesis, I explore how diegetic sonification can be used as a tool to support these low vision gamers in the typical gaming environment. I asked low vision players to engage with a prototype game level with two diegetic sonification techniques applied, without the use of their corrective lenses. I found that participants had more enjoyment and experienced less difficulty and confusion when the sonification techniques were applied. This shows that diegetic sonification can be used to support low vision players in playing games without their corrective lenses and improved their overall enjoyment.

Computer Entertainment Technologies for the Visually Impaired: An Overview

Over the last years, works related to accessible technologies have increased both in number and in quality. This work presents a series of articles which explore different trends in the field of accessible video games for the blind or visually impaired. Reviewed articles are distributed in four categories covering the following subjects: (1) video game design and architecture, (2) video game adaptations, (3) accessible games as learning tools or treatments and (4) navigation and interaction in virtual environments. Current trends in accessible game design are also analysed, and data is presented regarding keyword use and thematic evolution over time. As a conclusion, a relative stagnation in the field of human-computer interaction for the blind is detected. However, as the video game industry is becoming increasingly interested in accessibility, new research opportunities are starting to appear

Exploring asymmetric roles in mixed-ability gaming

Tese de mestrado, Informática, Universidade de Lisboa, Faculdade de Ciências, 2020Noticeably, the majority of mainstreamgames — digitalgames and tabletopgames — are still designed for players with a standard set of abilities. As such, people with someformof disability, oftenface insurmountable challengestoplay mainstreamgames or are limited to playgames specifcally designed for them. By conducting an initial study, we share multiplayer gaming experiences of people with visual impairments collected from interviews with 10 adults and 10 minors, and 140 responses to an online survey. We include the perspectives of 17 sighted people who play with someone who has a visual impairment, collected in a second online survey. We found that people with visual impairments are playingdiversegames,butface limitationsin playing with others who have different visual abilities. What stood out is the lack of intersection ingaming opportunities, and consequently, in habits and interests of people with different visual abilities. In this study, we highlight barriers associated with these experiences beyond inaccessibility issues and discuss implications and opportunities for the design of mixed-abilitygaming.Asexpected,we foundaworrying absenceofgames that caterto different abilities. In this context, we explored ability-based asymmetric roles as a design approach to create engaging and challenging mixed-ability play. We designed and developed two collaborative testbedgamesexploring asymmetric interdependent roles. In a remote study with 13 mixed-visual-ability pairs we assessed how roles affected perceptions of engagement, competence, and autonomy, using a mixed-methods approach. The games provided an engaging and challenging experience, in which differences in visual ability were not limiting. Our results underline how experiences unequal by design can give rise to an equitable joint experience

Virual world users evaluated according to environment design, task based adn affective attention measures

This paper presents research that engages with virtual worlds for education users to understand design of these applications for their needs. An in-depth multi-method investigation from 12 virtual worlds participants was undertaken in three stages; initially a small scale within-subjects eye-tracking comparison was made between the role playing game 'RuneScape' and the virtual social world 'Second Life', secondly an in-depth evaluation of eye-tracking data for Second Life tasks (i.e. avatar, object and world based) was conducted, finally a qualitative evaluation of Second Life tutorials in comparative 3D situations (i.e. environments that are; realistic to surreal, enclosed to open, formal to informal) was conducted. Initial findings identified increased users attention within comparable gaming and social world interactions. Further analysis identified that 3D world focused interactions increased participants' attention more than object and avatar tasks. Finally different 3D situation designs altered levels of task engagement and distraction through perceptions of comfort, fun and fear. Ultimately goal based and environment interaction tasks can increase attention and potentially immersion. However, affective perceptions of 3D situations can negatively impact on attention. An objective discussion of the limitations and benefits of virtual world immersion for student learning is presented

Adapting Videogame Interfaces for the Visually Impaired: A Case Study of Audio Game Hub

Technology applications including games are generally not designed with the blind or visually impaired in mind. This is an invaluable area of research as it is this population that would benefit the most from accessible technology enabling inclusion and participation in society. “Nobody makes games for us” was a motivator for this research. This paper describes the process of creating a set of audio games for the visually impaired. The principles of audio game design are discussed and based upon these the Audio Game Hub is proposed. Audio Game Hub is currently a set of four audio games that have suitable interfaces for the visually impaired. Audio Game Hub is currently available for download on multiple platforms and has seen popularity with both visually impaired and normal sighted players, which provides an area for future research

Audio only computer games – Papa Sangre

This article attempts to analyse the audio-only game Papa Sangre. It discusses the background to the analysis and the history of of audio-only games, before concentrating upon Papa Sangre itself. It locates the game within the survival horror genre and explores how the gameplay operates from both a technical and player's point of view. It then locates the analysis within a field of film and game sound analysis, considering how audio-only games differ from videogames. It outlines several theoretical approaches to the typology of videogame sound, before proposing a hybrid approach that is more appropriate to audio-only games. It applies this to the sound world of Papa Sangre and analyses some captured gameplay. The essay concludes by suggesting a relationship between Papa Sangre and musical performance and composition

Design and evaluation of auditory spatial cues for decision making within a game environment for persons with visual impairments

An audio platform game was created and evaluated in order to answer the question of whether or not an audio game could be designed that effectively conveys the spatial information necessary for persons with visual impairments to successfully navigate the game levels and respond to audio cues in time to avoid obstacles. The game used several types of audio cues (sounds and speech) to convey the spatial setup (map) of the game world. Most audio-only players seemed to be able to create a workable mental map from the game\u27s sound cues alone, pointing to potential for the further development of similar audio games for persons with visual impairments. The research also investigated the navigational strategies used by persons with visual impairments and the accuracy of the participants\u27 mental maps as a consequence of their navigational strategy. A comparisons of the maps created by visually impaired participants with those created by sighted participants playing the game with and without graphics, showed no statistically significant difference in map accuracy between groups. However, there was a marked difference between the number of invented objects when we compared this value between the sighted audio-only group and the other groups, which could serve as an area for future research

Wayfinding without Visual Cues: Evaluation of an Interactive Audio Map System

Work completed as part of an MSc by Research project

Using Games to Practice Screen Reader Gestures

Tese de mestrado, Engenharia Informática (Engenharia de Software) Universidade de Lisboa, Faculdade de Ciências, 2021Nowadays, a smartphone is fundamental for multiple aspects of our lives. These have evolved from a basic tool to communicate to a multi-purpose tool that allows to communicate with colleagues and friends and to get any information or entertainment. Android and iOS, the most popular mobile operating systems, have developed built-in screen readers that make smartphones generally accessible to blind people using gestures and help them use more of their smartphones. However, users experience difficulties due to unfamiliarity with the gestures and due to lack of interaction with their touchscreens. One possible way to improve the accessibility of these technologies could be through games that can teach how to perform a gesture correctly and explain how it can be used, as lately there has been a growing interest on using video games as an innovative educational tool. We developed Games for Gestures, a set of accessible games to discover and learn the gestures Google Talkback offers and our goal is to explore whether it is possible for mobile accessible games to be used as a gesture discovery and practice method. Corda focuses on teaching how to navigate with Explore by Touch. Foguete focuses on directional swipes left and right and on teaching Swipe To Explore. Guarda Redes is focused on the more advanced gestures. To evaluate our games, we performed a study in which participants played our games for a period of 5 days. After that, we conducted audio-recorded remote interviews with questions about the games and their overall perception of gestures. Our results suggest that accessible games could be important in the process of learning gestures, as they offer a playful method of learning, particularly for less experienced users. This, in turn, would increase their autonomy and inclusion, as this process would become easier and more fun for them