Hello.
One of my friends is currently making a bachelor's thesis, and as his topic, he chose audio game development (yes, he knows many visually impaired people). :-) The game is basically an artillery style game in which you control a tank and you have to hit your enemies. However, you can only move on the map and adjust your firing angle and the firing power.
See https://tojik.cz/artilecho/ for more details and the download link.
Unfortunately, he has still a restricted account, so you'd better join the IRC chat room mentioned on the website.