HINT:
"Monsters from space have attacked your home asteroid. The security forces try to protect the citizens of Astral. You and your friends must defeat the creatures."
This opening setting provides the background for a fast and extremely tricky Shoot' em Up style game. While Episodes one and two deal with the defense of the asteroid, episode 3 has a different objective:
Revenge Your home grounds are devastated and there is not much fun left in life. Out of despair you decide to wipe the whole race out of the galaxy. Cruelly!
1 to 3 players can try to accomplish the missions in three episodes.