Dark Alleys & Twisted Paths (13th Age Compatible) is a massive expansion book for all classes of the Core Book and 13 True Ways. You get a ton of new goodies, new races, new talents, new spells, new powers, new feats for every PC you can imagine, on over 240 pages. My first 13th Age expansion book, Dark Pacts & Ancient Secrets, was all about expanding wide with new classes, but with this book I'm going back to the original 15 classes from Barbarian to Wizard to give you many new ways to create unique and interesting characters. - from the publisher's blurb