Tyrant Robot of Letrius

Far off the beaten path lies the half-destroyed planet of Letrius. The indigenous mountain people, inhabitants in
widespread villages, impoverished workers living between the castle walls, and royalty ignore or barely tolerate each other.
The arrival and coronation of the oversized robot, smashes apart the delicate planetary balance by expanding its power.
Will the people fight back and destroy the "robot kingdom?" This sociological sci-fi work explores the lives of those under
oppression and what they decided to do about it. Includes two bonus short stories.