Guide the dot through the courses using your mouse. If you touch a black wall, you have to start over! Down arrow to shrink and Up arrow to grow.
This is one of the very first projects I made. I only knew a little bit about Scratch back then, so this isn't very good. But it is still something. This is also just a prototype, however. There might be a better one that comes out in the future. Music: https://www.youtube.com/watch?v=5dasaVm7L-Y