While many games - e.g. Peppa Pig (at least for the captions) do a decent job of this. It would be nice to have captions/subtitles for all audio and an voice that reads written information.
E.g. Nex Gym You can't hear the directions for what's expected in the workout, Elmo says is completely inaccessible for the deaf or hard of hearing - especially if parents are wanting to it play with their kids or to make it more accessible for their kids.
I know I put this in the Facebook group but now that I realize there's a forum I decided to add it here as well.