Press the green flag, first. Then, you can drag the mouse towards the apples and you eat them. The more apples you eat, the less hungry the cat (or as his name is; Apple jack) will be.
Thank you sooo much to everybody who has helped me. I thank my Mom, myself, the 20 Games to Create with Scratch book, and that's about it. I also thank Max Wainewright who is the author of the Scratch book. Also, as a bonus, thank you to everybody who is going to or has or is playing this game right now. I really appreciate it, and this is the first interesting game I've made. XD :3