Hướng dẫn:

Your goal is to clear each level and destroy the boss at the end without being destroyed by the opponents you come up against. Clear all the levels to win the game. If you wish to improve your score, go for as long as you can without getting hit while destroying other enemies. This will grant you a score multiplier shown in the bottom right. Pickup power ups and red power crystals for increased weaponry damage and score respectively.