"Long ago, in a distant galaxy, an alien race sent a huge world-called Naju-hurtling toward Earth, loaded with a cargo of mysterious life forms.

During the long journey, these creatures have multiplied and become increasingly evil-and now Naju teems with evil. However, deep within this complex globe are self-destruct mechanisms that can be activated to destroy it before it reaches Earth.

Now, you must battle your way deep within Naju's labyrinths to destroy the alien world. You are the guardian of Earth and your saga will become The Guardian Legend."

The main character is anonymous, because their identity doesn't matter. What does matter are your actions, which include saving the world. It contains top down adventure action much like in Master Blaster and it has top down shooter sequences, which provides for a nice balance and variation in the action.