Playing everything, finishing nothing, posting screenshots.
If you ever want to play this game's spiritual (or actual, who knows?) successor, you can try Viewpoint. It's much prettier and there's a few different versions, the best ones probably being on the Neo Geo and Playstation (never played that one, though).
Honestly, Zaxxon didn't really inspire any great interest in the isometric shooter genre for me. Though on the other hand Viewpoint DOES have some nice graphics, so maybe I'll give it a look.