Abstract
Launching elastic balls attack the digital blocks on the screen, each hit can reduce the number of
digital blocks. When the number is zero, the digital blocks disappear. Touching other balls on the
screen with the balls can increase the number of elastic balls that can be launched. After each
launch, the digital blocks will move down one layer, and the game ends when several blocks reach
the bottom of the screen. Earning points can replace the skin of the elastic ball.