The Empyrean series has taken the literary world by storm, with the recent release of "Onyx Storm" earlier this year propelling all three books to the top of Amazon's Kindle best sellers list for 2025. The series first gained momentum with the publication of "Fourth Wing" in 2023, thanks in large part to the influence of Booktok. Since then, Rebecca Yarros' romantasy series has grown exponentially, dominating bestseller charts across various platforms.
The viral success of "Onyx Storm" has drawn a surge of new readers to the series, highlighting the captivating blend of fantasy and romance that Yarros masterfully weaves. This unique mix has captured the hearts of a diverse readership. With the announcement of a "Fourth Wing" TV series greenlit at Amazon, the Empyrean series has the potential to surpass even the iconic Harry Potter franchise in popularity, provided it continues to captivate audiences across different mediums.
The Physical Editions Are Popular Too
Onyx Storm (Deluxe Limited Edition)
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While the Empyrean series reigns supreme on Kindle charts, it also holds a strong position on Amazon's list of top-selling physical books for 2025. Both the deluxe and standard editions of "Onyx Storm" are ranked within the top 10, and "Fourth Wing" maintains its spot in the top 25. The only book to edge out "Onyx Storm" as the biggest fiction release of the year is the latest installment in Suzanne Collins' Hunger Games series. However, with more readers discovering the series through "Fourth Wing," there's a chance "Onyx Storm" could reclaim its top position before the year ends.
AnswerSee ResultsFourth Wing and Iron Flame are Part of Kindle Unlimited
Kindle Unlimited
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For those eager to dive into the series, the first two books, "Fourth Wing" and "Iron Flame," are currently available for free on the Kindle app with a Kindle Unlimited subscription. This offers a perfect opportunity for new readers to catch up on the series before the books are potentially removed from the subscription service.
