The Strategic Defence Initiative has become a reality: Man is now protected against himself by an all-encompassing system of laser-bearing satellites.

Peace reigned until the arrival of a hostile alien force who have taken the system and are using it to threaten the very existence of Mankind.

In an attempt to defeat the aliens, a single Eagle class E751 freighter fitted with a standard Federation laser has been sent against the aggressors. The aim: annihilation!

The main screen places the Eagle in orbit above the Earth, which slowly turns showing the land-masses beneath - an unnecessary but pleasant effect.

A necessary but unpleasant effect is the alien attack waves which whizz past at tremendous speed; blasting them is more a matter of luck than skill. In fact the Eagle can be placed to one side of the screen and left on auto-fire, which proves quite effective for most of the time.

This Ouicksilva re-release on the Bug-Byte label is a poor substitute for a computer game.