Although it was forward scrolling as opposed to isometric like its arcade counterpart, Zaxxon 3-D did have the unique attribute of being in 3-D.
Zaxxon 3-D made use of the "SegaScope" 3-D glasses for the Sega Master System with your view being from behind your ship. While not required to play (the game could be played in 2-D mode), it did add playability to the game. It was much more difficult to gage distances without being in 3-D mode. The 3-D version added much more sense of depth.
Only six 3-D games were released for the SMS with Zaxxon being one of the earlier titles. The SMS was the first home consoles to provide 3-D gaming and while pretty crude by today's standards it still worked rather well. Most of the few games released that made use of the SegaScope 3-D glasses made effective use of the 3-D effect. Unfortunately, the glasses are pretty hard to come by and will only work with the original model SMS (not the SMS II).
Thanks for stopping by and check out some of my other recent retrogaming posts below!
Nintendo Power (July/August 1990)
@darth-azrael/nintendo-power-july-august-1990
Mighty Morphin' Power Rangers (Super Nintendo, Game Boy)
@darth-azrael/mighty-morphin-power-rangers-super-nintendo-game-boy
Super Skateboardin' (Atari 7800)
@darth-azrael/super-skateboardin-atari-7800
Wonder Boy in Monster Land (Sega Master System)
@darth-azrael/wonder-boy-in-monster-land-sega-master-system
Nintendo Power (June 1999)
@darth-azrael/king-s-field-playstation
King's Field (PlayStation)
@darth-azrael/king-s-field-playstation
Excitebike 64 / Excitebike
@darth-azrael/excitebike-64-excitebike