Considering that this can be fairly described as a sci-fi reworking of the Iliad, and that I'm quite certain the inspiration behind it—or at least the decision to set the Trojan War on Mars—is also the source of my least favorite Ancient Greek tidbit. Homer described the sky as "bronze" on three occasions, which has led to the annoyingly often-repeated claim that the Greeks couldn't see blue. I'm very glad Simmons didn't explicitly reference this. It's actually astonishing how well he executed this concept. Simmons took his research extremely seriously. He managed to use both the Iliad (and the broader Greek Epic matter) and Shakespeare's The Tempest (and derivative works) not just as mere set dressing but as fundamental components of a story (or set of stories). Incredibly, it manages to be compelling both to those who know nothing about either of these and to those who know way too much.
It's a bit annoying that he didn't manage to wrap things up in 640 pages, but at no point did it feel like he was wasting time. I guess I'll have to read the sequel too.
Certainly, what I can say about this particular book is that it is in a category of its own. At least I have never read anything similar before. Besides managing to create a new world (a dystopia), it effortlessly transports us from the siege of Troy and the battles of the warriors to the new world and to Olympus (very nice descriptions of the Gods).
For most of the book, I read with pleasure what was happening in Ilion. In fact, I laughed quite a few times at the way Hakenperry told the story. However, from a certain point onwards, the situation got a bit out of hand and I didn't enjoy it as much. Also, for most of it, the story of Moravec and Orpheus tired me, although that doesn't mean it didn't have points that caught my interest.
All in all, it deserves congratulations, but I don't think I will read "Olympus", although I am a bit curious about what will happen with the battle between humans and Gods.