Mega Man Zero is a direct continuation of the Mega Man X series in both gameplay and plot. Enter the Mega Man quest universe as Zero, a legendary Repoid from one hundred years ago. As his principal weapon, he wields a lightsaber. Employ it to slice your opponents. Help the exiled scientist Ciel uncover the source of Zero's new renewable energy. Conquer your foes and discover the source of power, or risk utter defeat. It is your responsibility to defend the good from the destructive forces of the universe. Mega Man Zero, which is billed as the most difficult Mega Man quest game ever, features side-scrolling action gameplay with 70 collectible Cyber-Elf power-ups to assist you in completing your mission. Rockman Zero was released in Japan.