A terrific supplement to the "Classic Traveller" experience! Very detailed, thought-provoking ideas with enough crunch to satisfy most gamers. It's a shame that a Jungle Environment book was not published, because that would be great too! My only complaint is that, when printing the PDF, some pages print full-page while others are tiny--perhaps little larger than a quarter-page. This is a minor quibble, as all pages are legible.