Very well done for a (seemingly) first project. The interfaces were clear, and everything was well explained. Unfortunately, the puzzle of solving how the green ball moved was not too engaging, so I didn't play as long. And getting to the blue ball did not work for me, since putting in left left left, I moved up down up.
But well done making a quit button. You can't imagine how often I had to Alt + F4 out of a desktop app