Hello, thank you for your feedback.
Our programmer was pleased with the compliment to the code. Or at least that's what he understood when you pointed out the lack of bugs lol.
Actually, there is a fullscreen mode built into the game itself. It's in the options menu. We don't know why the itch.io fullscreen button disappeared. We didn't remove it on purpose. :/
Overall, we're happy with your feedback. It was a huge challenge to get everything done by the GWJ deadline, and although we know we have a lot to improve, we're proud and satisfied with the result.
And congratulations on your score. You did very well. :)