You are the little person. It moves with your mouse. The ball with the X in it will bounce off you. You get points when the X ball touches the purple shape, but the game ends if you touch the orange shape. Start the game by clicking the green flag, then pressing the start button.
The idea of using a string as the main engine in my letter to number converter (and number to letter) comes from hello2248 from the page https://scratch.mit.edu/discuss/topic/144996/. I was all ready to do a set of 26 IF statements for each converter, rather than indexing into a string of all the characters. I love brilliant people.