The players assume the role of an alien-humanoid space pilot who has been exiled from their home galaxy for committing an unlearned crime. The only way the player character can return is to restore their honor; the only way to do so is to invade and defeat the alien invaders who have been known to frequently attack the player character's people using a ship called the Main Fighter.
- Platform: Arcade, Commodore C64/128, ZX Spectrum
