Chopper War

Your mission in this side view horizontal scrolling shooter is to blast as many waves of enemy aircraft as you can for 90 seconds to move on to the next wave. As you scroll constantly from left to right, the enemy will appear from the right and you must avoid or shoot them. A clock also counts down and every time you shoot the enemy then it resets but if you let it run down then you lose one of four lives. Touching the enemy aircraft or getting hit by their weapons also loses a life. At regular intervals, a helicopter flies below and if you bomb it then your weapon is upgraded but you only have three bombs.