Observe the stone flying out of the left side of the screen and select the correct hammer to break the stone before the stone hits the egg."Arithmetic competition - breakable egg" is a casual puzzle game that combines arithmetic. In the game, you need to observe the stone flying out of the left side of the screen, and before the stone hits the egg, select the correct hammer from the hammer with the formula below the screen to crush the stone. If you let the stone hit the egg, it will break the egg.