Not a bad game, but I do recall being a bit disappointed with it. No better (and in fact probably worse) than some of the a500 floppy disc based shooters. Z-Out, ProjectX, Disposable Heroes and some others not only look as good, but play better.
It's not that T-Zero is bad at all, just that I was expecting more from a cdrom based aga game that requires extra ram.
One of the slicker late Amiga games at least (the youtube vids really dont do it justice).