Summary
VGA graphics? Yes. Interesting gameplay? No.
The Good
When Galactix was released, there weren't many independently produced shareware games wiith snazzy VGA graphics. Commander Keen and Duke Nukem were both EGA.
The Bad
Unfortunately, this game is another in a long line of Galaxian-styled games that spanned half a dozen platforms and at least a hundred titles (Astro Blaster, Cosmic Monsters, Threshold, Megamania, Spider Fighter, Moon Cresta, Bandits, A.E., Satan's Hollow, etc). The official sequel to Galaxian, Galaga, released 11 years earlier, still outdoes Galactix handily.
The Bottom Line
A poor Galaxian-style shooter notable only for having better production values than most shareware games of its time.