Build Wall Ball

You will build Wall Ball from scratch across six small steps. It’s a one-player game: a paddle on the left, a solid wall on the right, and a ball you have to keep in play. Miss it three times and it’s game over. Each step shows just the lines you add, explains them, and ends with the whole program so far — which you can send straight to the editor and play. Along the way you will reuse almost everything from the earlier lessons.