(NOTE: This project was briefly removed due to the subjects included being "too intense for a service used by young children". I don't see what the Scratch Team could possibly be talking about- literally, the subject of this project is a living, breathing tennis ball. How this could possibly be too intense for little kids is beyond my comprehension.) Click on the buttons to beat up that clumsy Tennis Ball. Click on that clumsy Tennis Ball to heal him. Press 2 on you keyboard or press the "change" button to change all of the buttons. DIY Mode: Tilt the micro.bit to move around. Press and hold a to charge your attack. Release a to attack. Not that you would necessarily ever use it, of course.