* NintendoHard: The NES version is ''extremely'' unforgiving. On top of that, the KonamiCode didn't work for this title (mainly because it hadn't been introduced yet).
* PolishedPort: The NES version added two levels, improved the gameplay, made levels longer and more challenging, added in a new soundtrack more varied and memorable compared to the arcade version's repetitive, faux-military snare drums ''and'' put in a definite final boss and ending rather than being an EndlessGame.