The packaging for this game describes it as "graphically amazing"; I would not say this but it is very good. You need a colour monitor to be able to appreciate, or even play it.
On the first screen you guide your ship up a runway and through a hole at the far end. External forces affect your movement.
In screen two the aliens swoop down firing missiles. In one corner is the earth, opposite this is the alien planet. When you shoot the master alien you are taken onto the planet surface.
Next you fly through a trench and shoot similar beings to the ones already encountered. The graphics do not give much reality as they lack depth. On black and white monitors this is merely guess work as the colours are similar shades of grey.
Next you encounter walls which you must avoid crashing into, and you must shoot master aliens which, when exploded, fire at you.
Bugs were encountered from time to lime which added a different, but not very original, dimension to it.