This book is possibly the most useful one to come out in the line since the initial rulebook. It contains new options for character creation, new backgrounds (including options for AGI and Uplifts that differ from the standard), new factions, new morphs, and most importantly tables containing the book and page number for every morph, every background, every option that has appeared in any of the earlier books. I would have paid $10 simply for that last one but I also got so much more. If you play Eclipse Phase I cannot recommend this book highly enough.