Mega Man (NES)

Mega Man is one of the great icons of the NES and a game that would go on to found a number of basic principles for 2-D sidescrolling action. These principles would be better refined in sequels and offshoots, but this is where a little blue robot first set out to stop Dr. Wily and collect all sorts of neat weapons.

It's also considered to be one of the hardest games on the NES.

Graphical Errors
One of Guts Man's animation frames uses the wrong tiles, resulting in one of his hands appearing to be cut off.

Unused Sprites


Sprites of Dr. Light talking and pointing upwards while wearing colored pants (the used sprite has white pants). They would have fit best in the ending, but really could have been anywhere.

Regional Differences
Probably the most recognizable change. Aside from the obvious complete overhaul, the American version was given a logo that remained a staple of the series outside Japan whereas the Japanese logo remained...you get the picture.

The sound effect that plays when selecting a Robot Master also plays when pressing Start in the Japanese version, with Mega Man and the borders also flashing gray and white. The US one is silent, with "Press Start" blinking after doing so.