Play out this difficult game of survival as the key member of a Royal Navy helicopter squadron under missile attack

The task force, headed by its aircraft carrier flagship, awaits the return of its helicopter squadron. The squadron is being attacked by missiles.

A sole fighter helicopter, armed with two cannon, is available to defend the incoming squadrom and the vulnerable carrier. You have the controls.

The game can be played with either keys or joystick (Use the left joystick with the firing button pointing away from you).

I think the game is slightly easier with the keyboard option but remains very difficult to beat.

Lines 60-110. These palette-changing commands enable objects on the screen to appear to move in front of, or behind, other objects when used with GCOL 3 (Exclusive OR) graphics colour command.

For example, I needed the white bullets to pass behind the green helicopters. White (colour seven) EORed with green (colour 2) produces magenta (colour 5) which does not work.

I therefore redefined colour 11 as white and colour 9 as green. Colour 11 EORed with colour 9 produces colour 2 (green). The effect will not work. Colour 11 (white) goes green when passing over the green helicopter and therefore appears to go "behind" it.

To make life easier, you can also change the figure after UNTIL TIME = in line 170. Reducing this means that you don't have to survive for so long.