This delightful system-agnostic setting book opens with a detailed history of how Skirmisher Publishing's Kos campaign setting came to be, and in particular the concept of rooting a fantasy setting in reality, which enables that fantasy world to assume a greater life within the shared alternate reality that is created around the game table. One look at the map confirms that I'm not the only person who carefully modifies real places I've been to when creating game locations... (and yes I have been to Kos!). Those who are interested in how game books come to be will find this introduction fascinating as the entire heritage of the Kos setting is explored.
A very detailed description of the Island of Kos forms the main part of this book. It sounds almost as idyllic as the real place... if not more so. Peaceful, prosperous, with an established system of government and, despite a lack of enemies, well-defended should the need arise. Naturally, there are also plenty of opportunities for adventure, even if you have to go off of Kos to enjoy some of them - a nearby island that is home to a rough community but a good place to visit if you enjoy pit-fighting, another that is a haven for pirates and other such rogues and so on. And of course there are hobgoblins on the nearby shore of Anatolia.
Next the towns and villages on Kos are explored (apart from Kos City itself, which is the subject of another book). There are twelve of these, so plenty of variety and interesting places to visit. Colourful too, with each having their own distinctive symbol appearing on banners and shields. A cataclysm some one hundred years ago destroyed a nearby ancient civilisation, and remnants of it are to be found to this day, some being noted as near the settlements.
This theme is continued in the next section on distinctive locations, many of which include ancient remains. Several adventure hooks are supplied here to entertain visiting parties... even a carnival to participate in. There's certainly a lot to see and do on Kos!
Even if you have an established campaign setting - homebrew or published - it is worth considering including Kos Island in a suitable location as it is presented as an interesting place to visit, if not to use as a base.