Looking forward to future updates! Glad you have a plan to get things finished. Please let us know when it’s ready, because I’m sure it will be a hit!
I played the desktop build on Windows with NVDA enabled to test screen reader compatibility.
I can’t speak specifically to GDevelop, but if NVDA is interpreting your application as a document, then it needs to explicitly tell it that it’s an application. For an HTML document, that would be accomplished by adding role="application" to the <body> or <main> element. You may need to consult your documentation for the actual fix. Otherwise, the workaround for an NVDA user is to press Insert+Space when they open your game.