Use the left and right keys to navigate. When you reach the end of the level, press g to go to the next one. Press h to hide from adults, and press a to reappear once you are safe. Once you get to the empty levels, press up to climb over the obstacles, and keep pressing right to keep going. Once you collect the ginger beer, you win.
I made this because of the book "The Invisible Wall". This is the section where Sarah asks for Harry to get her ginger beer. But it is more than ginger beer, as it is a note to a Christian. Back then, Jewish and Christians hated each other. Sarah was a Jewish. Harry, unaware of all of this, goes into the night to secretly get her ginger beer, and has to hide from adults and get over obstacles.