这个游戏演示了很多的API函数，并且它能生成非常快的和酷的图形。在UFO降到屏幕底部之前你必须将它停止，而且你被一只大机关枪瞄准了。-demonstration of the game a lot of API function, and it can generate very fast and cool graphics. UFO fell in the bottom of the screen before you have to stop it, but you have been a big machine guns to aim at.