Every game I listed has screen reader support other than Space Channel 5 and Karateka. Wasn't aware about the info on Way of the Passive Fist, so thanks for that info!
@3 Space Channel 5 part 2 is available on Steam. I haven't played the first one, but from what I've read pt 2 is the superior game, and it's fully voiced in English.
As far as the playable vs accessible debate goes. If you're looking for fully accessible games, it's going to be very slim pickings just because of where accessibility and developers awareness is of it as of now. If you want fun experiences with a bit of difficulty getting around, any of the games listed will fit the bill unless they're fighters or basic side scrollers. Now it's up to you whether or not you want to put up with a game without screen reader support and all of that jazz, but you're severely limiting yourself if you do at this point in time.
Whatever you want to play is your choice, and the effort you want to put into it is your choice. But making this divide between playable vs accessible I think doesn't do anyone any favors, because of course people list games that are games they've played through, or have heard can be played through.