The Empyrean series has taken the literary world by storm with the release of Onyx Storm earlier this year, catapulting all three books to the top of Amazon's Kindle best sellers list for 2025. The series gained massive popularity starting with the release of Fourth Wing in 2023, fueled significantly by the viral influence of Booktok. Since then, this romantasy series has not only captured the hearts of readers but has also dominated most bestseller charts.
The release of Onyx Storm has successfully drawn in a surge of new readers, highlighting the infectious appeal of Rebecca Yarros' storytelling. The perfect blend of fantasy and romance in her writing has captivated a wide audience. With the announcement of a Fourth Wing TV series greenlit at Amazon, the Empyrean series stands poised to potentially eclipse even the Harry Potter franchise in popularity, provided it continues to engage and expand its fanbase effectively.
The Physical Editions Are Popular Too
Onyx Storm (Deluxe Limited Edition)
1. See it at Amazon
2. See it at Barnes and Noble
3. See it at Target
The Empyrean series not only rules the Kindle charts but also holds strong positions on Amazon's top-selling physical books list for 2025. The deluxe and standard editions of Onyx Storm rank within the top 10, while Fourth Wing maintains a spot in the top 25.
Only the release of Suzanne Collins' latest Hunger Games book has pushed Onyx Storm to the second spot on the fiction bestsellers list. However, with an influx of new readers discovering the series through Fourth Wing, the rankings could shift once again before the year ends.
AnswerSee ResultsFourth Wing and Iron Flame are Part of Kindle Unlimited
Kindle Unlimited
35. See subscription options.
36. See it at Amazon
The first two books in the Empyrean series, Fourth Wing and Iron Flame, are currently available for free on the Kindle app through a Kindle Unlimited subscription. If you're eager to dive into the series, simply log into your Kindle account and download these titles before they potentially exit the subscription service.
