• Choose any two number balls, if they add up to 10, you will get star points, otherwise lose life points. • If the sum exceeds 10, it will become two number balls: tens and ones digits. If less than 10, it will leave only the ones digit ball with a new ball. ex: ③+⑥ => ⑨ & (new ball) ; ⑤+⑨ => ①&④ • The “Crown” ball can match any number and score points, but the “Blank” ball cannot do anything.