 The controls remain the same between the two styles of gameplay, with the only difference being that in the side-scrolling segments, the A button shoots hearts over the ship instead of dropping bombs into the ground like the vertical-scrolling segments, which helps the player keep the power-up bells afloat in the side-scrolling stages.The player's primary power-up items are once again bells that uncovered by shooting floating clouds throughout the stages.There are six types of bells in this installment