Game Accessibility - Learn about elements to consider when trying to make your game more accessible.
Game Accessibility Guidelines - Guidelines for making your game more accessible, categorised by impairment and ease of implementation.
Smash Clay Audio - A game audio and accessibility blog by Adriane Kuzminski. Home to a huge list of resources for anyone interested in audio and accessibility issues facing blind gamers.
Audiogames.net - A community for blind gamers and portal to many audiogames.
AppleVis - An online community for discussing iOS and accessibility apps.
GAConf 2017 Talks Playlist - A selection of talks from GAConf in 2017
Pixel Prospector - A great site for game dev. tools, guides and general information.