This version comes with rather poor instructions and does not portray the true Defender picture. The object of the game is to fly around a planet shooting down aliens and boxes. The aliens pick up different kinds of boxes and try to reach the top of the screen. You just fly aimlessly around, the mountains don't even stop you, you just fly straight through them without harm.

This game is a poor copy. It's slow and very boring. My advice is to buy something similar to the game Defender, if you are into that kind of thing, and not this. A bad game for the 48K ZX Spectrum.