This
http://gameaccessibility.org/
seems to have gone up just in the past couple of weeks, so there is still development going on, but it already has
lots of FAQs
http://gameaccessibility.org/learn-essential-info-topmenu-69/1-game-design.html
to help anser your questions concerning what kind of disabilities affect game access and design elements which can provide access.
http://gameaccessibility.org/
seems to have gone up just in the past couple of weeks, so there is still development going on, but it already has
lots of FAQs
http://gameaccessibility.org/learn-essential-info-topmenu-69/1-game-design.html
to help anser your questions concerning what kind of disabilities affect game access and design elements which can provide access.