在无限的时间内将随机出现的敌机击落，并且在攻击敌机的时候不能够让敌方的子弹击中或不能与敌机相撞，否则玩家生命值减1及子弹数量减少一倍，直到玩家生命值为0，这时游戏结束。如果击中一定数目的敌机，将进入下一关。在敌机中有少数的敌机带有升级包，被击中后将成为玩家升级子弹和增加生命值的升级包，玩家拾到后子弹的数量将增加一倍（但最多只能够增加到原有子弹的三倍），同时生命值增加一点。在游戏中共设置了四种敌机类型，两种普通的敌机和两种高级敌机。游戏中将根据玩家击落的敌机数增加敌机移动的速度，同时对逃脱的敌机进行统计，如果超过一定数量的敌机逃脱则游戏结束。-the first landing the game, and then can be an unlimited period of time the aircraft were shot down there, and when the enemy attacks can not allow the enemy bullets can not hit or collide with the enemy, otherwise the value of the lives of players by 1 and reduce the number of bullets double life until the player value of 0, then the end game. If you hit a certain number of enemy aircraft, will enter the next level. In a small number of aircraft in the upgrade package with the enemy, was shot bullets will become the player to upgrade and increase the value of the upgrade package of life, after players found a bullet will more than double the number of (but can only be increased up to the original three times the bullets), at the same time increase the value of that life. CPC set up the game four aircraft types, both normal and two high-level enemy aircraft. Game players will be in accordance with increase in the number of enemy planes shot down enemy movement speed, the aircraft manag