A really nice game with nice music. I don't like the controls (firebutton on down key), so why don't you let the player choose the keys? I think the ship rotates too fast. It's hard to aim the enemy. Maybe you can accelerate the rotation (the longer you hold the key, the faster the rotation). It would be nice, if the game supported up to 4 players, too. If I spend a little time in the "start game screen" where I can choose my player name, it becomes black. (bug?) I use WindowsXP

Nice, but it's really hard to hit your opponent. The particles are neet. And please, don't use BMPs for your backgrounds. Consider JPGAlleg and JPEGs instead, you'll save yourself 4mb and us several minutes of download ;).