Introduction - If you have any usage issues, please Google them yourself
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