We have looked for the same assets hahaha I have also seen that the castle and the knights and other people have also used it.
The black menu may be due to the resolution of the browser (the original game is 1280 x 720). Anyway there is also an exe to run in Windows (if you have Windows of course hahaha). We have had some problems when exporting also with godot that many times does what it wants.
Thanks for playing the game.