The release of Braybrook's oft-cloned horizontal scroller in early 1986 was greeted with much acclaim from Zzap!, receiving 94% overall. You control a Manta class fighter flying over fifteen huge metallic dreadnoughts, inflicting as much damage as possible whilst dodging enemy fighters and mines.
I flipped over this when it was originally released, and even today it's one of the better scrolling shoot-'em-ups on the Commodore. The technical expertise has been surpassed in the two years since its release but the original still has its fair share of playability. Well worth a look if you haven't got it.