User summary: You are in control of an anti-matter launcher and your objective is to defend space colony L5 from the onslaught of the ruthless Megalytes. Their Warrior and Death ships rain down on you relentlessly shooting their formidable particle beams. Destroy the enemy vessels! Protect the colony! Aim and shoot a constant stream of missiles from your launcher. It will take all the skill and cunning at your disposal to avoid their particle beams and blast them to oblivion.