If you remember Gremlin's H.A.T.E. then you'll be halfway to understanding Star Goose. The scrolling shoot-'em-up gameplay is very similar, as are the 'tiled-floor' graphics and the basic feel. Star Goose is a bit more interesting, though, on account of the more varied gameplay (there's a 3D tunnel section every now and again where you can collect fuel and ammo and stuff) and he contoured play areas with mountains and trenches to fly through.
That said, it's still a pretty limited arcade romp, but for some reason I really like it. It might lack something as a 'proper' budget re-release, but you can't really argue with it at this price at all.