Galactic Crusader is an unlicensed game made by Bunch Games in 1990. It is a multi-player shooter.
Galactic Crusader is a fairly standard shooter, except for the low production value that is the hallmark of most unlicensed NES titles from Bunch Games, Wisdom Tree and others.
This is the story according to the back of the box:
"Your starship is alive - a metamorphic creature that can transform from a huge flying insect into a metallic destroyer. Penetrate squadron after squadron of bizarre alien fortifications. March onward to a final confrontation with a powerful enemy."