Ox

This is the final volume of the trilogy, and really shouldn't be read as a standalone novel.

It has a more complicated and exciting plot than the previous volumes, and it introduces yet more alternative worlds and fundamentally different alien species. Be prepared for confusion. If you haven't read the preceding volumes, I don't know how you'll get through it.

I remain vaguely uncomfortable with the human characters, and the relationships between all characters are unconvincing. Why do the mantas behave as loyal servants to the humans? This is convenient but not plausible. What do they get out of it? Nor do I understand exactly why 0X the pattern-entity feels bound to ally with the humans and other more physical beings. Yes, it feels that they contribute to its survival; but we're not shown them doing so.

It seems to me that Piers Anthony is competent with plot, he's quite intelligent and has a good imagination. He knows a fair amount about the world. But I'd guess he's a bit of a loner by nature, because he doesn't dramatize interpersonal relationships well. Probably neither would I, if I tried to write a novel; but at least I can recognize the problem.

If you've read the preceding volumes, I think this is worth reading to finish off the series; it's quite a trip, even though it may not be 100% satisfactory.