This is a great remake of the Konami classic Nemesis (European title) or Gradius (Japan, USA title). This game was first released for MSX1 but has been released for many other platforms including arcade as well. This remake is superb and well worth playing. Even if you don't know Nemesis, you should try this shooter. If you create an account (from within the game) you can even publish your scores on the internet. Enjoy this free Windows remake!