This Wiki page is edited by participants of the HTML Accessibility Task Force. It does not necessarily represent consensus and it may have incorrect information or information that is not supported by other Task Force participants, WAI, or W3C. It may also have some very useful information.
Explore needs for gaming
Some work that was done external to W3C has some interesting best practices for gaming accessibility: [Game accessibility guidelines] won the intellectual and developmental disabilities category of the annual US Federal Communications Commission Chairman's Awards for Advancements in Accessibility.