It's up to you to save the earth from hoards of Blitters! Make sure you
destroy them all while being careful not to get hit by the Laser Barrier they
deployed that slowly moves down toward your ship. Your weapons can't penetrate
the barrier and any Blitters that are behind it are safe, listen for the
warning alarm that the barrier is getting really close to your ship. Get an
extra ship each time you clear out all of the Blitters. Get the highest score
and share it with your friends.