Volfied

: You control the Monotros , which is protected by a shield when on the perimeter but becomes vulnerable while cutting into the field.

: You must retake 80% of each stage to drive the aliens back and save the survivors.

The story of the 1989 arcade classic Volfied is a quintessential 80s sci-fi premise: you are a space pilot returning to your home world, Volfied, only to find it besieged by a mysterious alien force .