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.

Return of the Mutant Space Bats of Doom