By any coincidence, is AGB-ALYH-USA an original code, or does it match that of a (presumably unrelated) USA licensed game? Maybe this "Star Wars 3" is just a re-release of another Star Wars game. They really tried hard to make it look like a real USA game, with seal of Nintendo, "Licensed by Nintendo", E.S.R.B. "T" rating, and even the code I mentioned.
I tried looking online for information about the supposed homebrew demo Azathoth mentioned, but I couldn't find it. I'm actually kind of interested...