Dr. Light was a genious. At a time when the world was at peace, he created eight robots to perform certain tasks for him: Rock, Roll, Cut Man, Guts Man, Elec Man, Ice Man, Fire Man, and Bomb Man. Each of them had their own use, such as Cut Man was used to cut down trees and Ice Man was used to explore terrain too cold for humans. As for Rock and Roll, Rock was a mechanic and Roll was a housekeeping robot. One day, Dr. Light's assistant Dr. Wily reprogrammed six of Dr. Light's robots to do his bidding and help him take over the world. Dr. Light, in an effort to stop him, changes Rock into a fighting robot, thus creating Mega Man.
Since then, Mega Man has spawned over 20 sequels, six for the Nintendo, five or more for the Game Boy, four or more for the Super Nintendo, several arcade games, Playstation games, computer games, and Sega Saturn Games. All of which take Mega Man on new adventures and new enemies to face. Truly an excellent game and probably one of the first equally challenging and equally beatable games for the Nintendo.