I'm actually working on a language of my own with a graphical editor, and I had the same idea of using it as a teaching tool. When I started making it, it was

I'm actually working on a language of my own with a graphical editor, and I had the same idea of using it as a teaching tool. When I started making it, it was so much fun making that I thought others should be able to have fun programming too. So I had the idea of releasing it under the guise of a puzzle game (possibly with no reference to programming at all) in the hopes that it would rub off on "real" programmers.