A story the author has clearly spent a lot of time thinking about, with a lot of details and history you see bits and pieces of that you get the impression has depth you are just not privy to. Best played after Escaped Chasm, the previous work by the author which has some connections to this story. Biggest complaint would be that while there is clearly a lot of world-building being done, we are kept at arms length from everything, to the point where I keep thinking 'oh, that is interesting' but never anything beyond that.