Also known as Neo Vulgus, it boasts some truly amazing (and quite bizarre) sprite work and a fantastic soundtrack by Junko Tamiya.
Titan Warriors was featured in Electronic Game Player in 1988 before being removed from the release schedules entirely – it didn't even get a Japanese release (there's an excellent piece on the game here).
While this build of the game is fully playable, it isn't final and may therefore contain some bugs.
It's certainly worth a look if you like your 8-bit shooters – and some of the visuals are brilliantly odd.