屏幕中央下方中央有一猎枪，位置固定，可用鼠标左、右键控制其转动方向。用空格键控制开枪。程序控制由屏幕左、右方以随机方向自动抛出飞碟（每次抛一个，各次抛出间有适当间隔）。抛出飞碟前应有提示。对每个飞碟，最多可以开两枪。程序应可统计当前击中飞碟数和失败次数。

程序可使用对话框结构或基于框架窗口的程序结构，设有开始和结束按钮或菜单选项。-The center of the screen with a shotgun beneath the central, location fixed, the mouse can be used left and right to control their direction of rotation. Use the space bar to control fire. Controlled by the screen left and right on a random direction automatically thrown out flying saucer (each throw one out there at the appropriate intervals). Should be prompted before flying out. For each trap, to open up to two shots. Statistics current procedures should be able to hit a few and the failure of the number of flying saucer. Procedures can use the dialog box structure or framework of a window based on program structure, with the beginning and end of the button or menu option.