Table 1.

Commands and keystrokes for navigating the environment

To	Press	Description
Turn Left	H	To hear the verbalized audio of the cardinal direction you are facing after having turned left.
Turn Right	K	To hear the verbalized audio of the cardinal direction you are facing after having turned right.
Walk	Space	If it is possible to advance, the sound of a footstep will be heard. Another sound will be heard that signifies having bumped into something if advancing is not possible.
Contextual Action	J	This command is used to ask what is in front of you, as well as to open doors.
Ask Room	F	This command allows the blind user to know in what room/floor he/she is located, and provides information about his/her current orientation and information about the task that must be completed, (if any).
Zoom In	Q	For users with residual vision, the zoom function was provided within the interface. As such, blind users can increase or decrease the size of the graphics presented on the map, thus being able to better appreciate the different elements of the videogame. In addition, the icon controlled by the player always remains at the center of the map, and when he/she goes in a certain direction, the map moves within the visualized space (Figure 1).
Zoom Out	A