Entertaining, as always. An interesting take on cultures mirroring Classical Greece and Egypt, with all sorts of history gags such as Greece and what is assumed to be Persia going to war with each side building an army of wooden horses and hiding troops inside of them, each hoping that the enemy will take them into one of their cities while simultaneously talking about how they aren't going to be dumb enough to fall for it.
The take on the different Egyptian gods is also a more subtle joke that requires a little knowledge about the history of Ancient Egypt to get; at a certain point in the book, all the gods of a thousand pharaohs become real, and the joke is how there are so many different gods all assigned to the same task over the years that none of them are quite sure how exactly they're going to go about it. This mirrors how the mythology of the real-life Old and New Kingdoms became unified, making everything a lot more confusing when it came to figuring out which god was in charge of what.
There are also some bits about the stand-in for the Greeks, who have a council made up of stand-ins for people like Aristotle, Socrates, Pythagoras, Sophocles, Plato, et cetera. Naturally, all these people have togas and beards, and naturally, all their discussions turn into massive arguments where nothing gets done. They are ruled by a "Tyrant," who is a democratically elected leader under the principle of one man, one vote: there is one man who elects the leader (the leader), and he casts one vote to elect him for four more years, and it is hailed by all as a great leap forward in democracy (again a dig at Athens' system, which was remarkably similar, although not quite as extreme).