THIS is how a game should be remade. Metroid (NES) is still there under the hood, but it's been fine-tuned and expanded. The world is bigger, there are more abilities, you can ACTUALLY AIM DIAGONALLY, and the difficulty is far more balanced. The improved visuals and music are obviously a nice touch, but Zero Mission doesn't just slap on a new coat of paint and call it good. It perfects every aspect of the original imperfect game.