Guardian II Revenge of the Mutants (UK) (19xx) [t1] - Amstrad CPC - Action, Sci-Fi

The Raiders have come to take the Earthlings away and turn them into Mutants, and only you can stop them. Zooming over the surface, look out for the Raiders as they attempt to snatch the Earthlings and take them away, or preferably, shoot them before they can do this. You can, however, rescue the Earthlings and return them to the surface. Each wave brings on new types of enemy, and there are plenty of them