A browser based audio game in which you have to chace after a fly

Your task is simple, continually scare the fly. Doing this is simple, whenever you hear the fly buzzing, you are within 2 feet of it. You must click in the game area, which is a simple black box, to trigger the device which scares it. Screen reader users may focus on the game area and press either ENTER or SPACE to click.

When the game starts, you're given the option to set a difficulty level. There is also a checkbox that, when clicked, causes a spinbox to appear. Changing the value in the spinbox sets the interval at which your score is spoken to you. For example, setting this to 10 would notify you every 10 points you gain.