This fall, Knopf Books for Young Readers will publish Christopher Paolini’s Eragon’s Guide to Alagaësia, a novelty gift book tie-in to the author’s bestselling Inheritance cycle novels. The book, which will be simultaneously published in the U.S., U.K., Australia and New Zealand, was developed in conjunction with Britain’s Templar Publishing and goes on sale November 3. Framed as a gift from Eragon to the reader, the book will feature illustrated spreads of the landscape and inhabitants of Alagaësia and will include paper engineering and other interactive elements.

"Eragon’s Guide to Alagaësia will take readers deeper into the captivating world Christopher created, offering a visual perspective of the novels that millions of readers across the world have come to love," said Knopf publishing director Nancy Hinkel in announcing the book. Paolini’s Inheritance cycle (consisting of Eragon, Eldest and Brisingr) has sold more than 22 million copies worldwide. The author is working on the fourth and final Inheritance book; a publication date has not yet been announced.