Return of the Mutant Space Bats of Doom

In this sequel, the mutant space bats of doom return yet again to invade earth. Only you stand in their way of achieving their nefarious goals. As usual collect the different colored gems that can increase your ship's firepower, slow down the enemies, or add to the number of lives. In the bonus stage you turn into a bat and fly around collecting the maximum amount of gems to increase the chances of success in battle.