Adding some indication of common accessibility features to game descriptions and some way of filtering based on this information would be extremely valuable.
This has started to happen already on some storefronts. As a result, work is currently underway on evaluating what best features to include would be, and how best to word them.
Until then, below is a general proposal of how the functionality could work. It is based on a core set of checkbox features together with a free text field for more details or anything else not covered by the checkboxes, and the data from the checkboxes used to enable filtering of game listings.
Example of how storefront information could be implemented