Tchaikovsky invented a new kind of fantasy world which clearly stands apart from the Tolkienesque Dwarf-Elf-Orc mainstream, thus giving this series an original twist. In this instance, the world is populated by humans, though different cultures are characterized by traits deriving from different insects, e. g., aggressive mantis-kinden with superior fighting skills, devious spider-kinden, mind-linked ant-kinden with a strict hive-like social order, resilient beetle-kinden, etc. Every "race" has special abilities we would consider magical, e.g. conjurable wings for flying or retractable claws for fighting, but which are by no means considered special in this background. Some elder races have not evolved along the path of modernization and are called "inApt" (as opposed to "Apt"), and are completely at a loss to comprehend the products of artifice, i.e. mechanics, chemistry, etc. Magic, as in fireball-wielding wizards, is much more subtle in Tchaikovsky's work.
I liked this innovative idea of insect-based cultures very much, which in itself alone is worth at least 3 stars. It opens up a wide range of new concepts of adventuring, fighting and social interaction which are wholly original.
The plot is relatively straightforward, involving an invasion of the peaceful and trade-oriented Lowlands by the expansive Wasp Empire. The main characters are mostly on the defending side, fighting for freedom and trying to organize an alliance of the dispersed races, trying to overcome prejudices and old rivalries between nations.
I found the book very entertaining and well-written, there are no obvious flaws in the storyline, and the characters are consistent in their goals and actions, though the overall characterization remains a bit on the shallow side, in my opinion.
I was sometimes irritated by the fact that certain characters were simply unable to grasp simple concepts due to their being inApt, which sometimes came down to someone not knowing how to use a simple door handle or spyglass. Even though these situations are part of Tchaikovsky's universe, this kind of limitation on the characters' part was a bit too much Author-imposed stereotyping for my taste, which led to minus 1 star in my rating of this book.
All in all I was pleasantly surprised, and I recommend the series to any fan of Fantasy literature. I've also read the next two installments of the series, and I must say the story keeps getting better.