'Game of Thrones' e-books make it easier to keep up with the action

'A Game of Thrones: Enhanced Edition' is available now for $9.

To properly celebrate the 20th anniversary of George R. R. Martin's best-selling A Game of Thrones, there's a new iBooks edition of the series that offers features to help you keep up with all of the action. The first installment is officially called A Game of Thrones: Enhanced Edition and all of the e-books pack in character maps, annotations, house summaries, a glossary of terms and other handy tools. As books two through five are added to the collection, that glossary will expand alongside developing storylines.

For example, when you come across a character, the e-books will remind you where they were and what was happening the last time they were discussed in the text. As new characters are introduced, readers can tap on the name for a pop-up introduction and details. Additional annotations are marked with crowns and offer historical details with a tap.

There's also an Appendix that explains all 92 house sigils with details about the symbolism, house seat, region and, perhaps most importantly, info on alliances. For those who have been champing at the bit for the sixth book, a preview of The Winds of Winter is also included with the iBooks-exclusive editions. A Game of Thrones: Enhanced Edition is available now for $9 with new digital versions of A Clash of Kings, A Storm of Swords, A Feast for Crows and A Dance with Dragons up for pre-order for $12. With the HBO series on hiatus for another few months, at least this gives you something Westeros-related to fill your time. Or you could opt for GoT coloring book.