[NES][Mid 80's?]Galaga-Like arcade shooter

Platform(s):Was maybe ported to the NES from something else, but I think I played it on NES

Genre: Arcade shooter

Estimated year of release:80's to early 90s

Graphics/art style:Galaga-like fixed arcade shooter

Notable characters: Played as a spaceship

Notable gameplay mechanics: Galaga-like where you shoot waves of enemies, however, you rotate around the center of the screen instead of the bottom of the screen, but are fixed to the outer edge.(Can't move closer to the center. Just left and right around the outside.) Enemy waves appear from the center of the screen.

Other details: When you completed a stage, you moved thru the center of the screen to the next level