Instructions: Click this link here. Use the arrow keys to move the ball. I was having issues with the embedded game messing up the webpage on mobile so I moved it. FYI, the win text is probably not appropriate for kids.
For the record, this is not the first Unity game that I have worked on. Two others - NOL and Circulation - I have been a part of, but as a 3D artist working with amazing teams of programmers who put up with my artistic crap. Maybe one day I will have a special post just for the games I've worked on before, since I now realize that there have been quite a few student game projects in my past.