Conspiracy is the penultimate stage from Aleste 2.
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It is finally time for the Aleste 2 to engage the enemy's mothership. The entire stage is spent fighting the mothership's defenses, which include various turrets attached to it, some of which fire lasers which turn 90 degrees when aligned horizontally with the player ship. This stage has no actual boss, as you just fight a series of turrets at the end.