Description：This is an interesting game with chalk and a bounce ball. If the bounce ball bumps into a white ball, the chalk will stretch a little and you will get 5 points; Bumps into yellow ball, chalk stretch a large section, 10 points awards; Bumps into red ball, chalk cut a large section, 20 points awards; Bumps into the chalk, the chalk will also be cut short.

Instructions：Arrow keys to move the chalk.