Fourth Wing Books Top Amazon's Kindle Best Sellers in 2025

The Empyrean series has taken the literary world by storm, with the latest installment, "Onyx Storm," released earlier this year catapulting all three books to the top of Amazon's Kindle best sellers list for 2025. The series' ascent began with the debut of "Fourth Wing" in 2023, fueled by the viral sensation of Booktok. Since then, Rebecca Yarros' romantasy series has captivated a wide audience, blending fantasy and romance in a way that appeals to a broad spectrum of readers. The recent announcement of a "Fourth Wing" TV series in development at Amazon adds to the excitement, positioning the Empyrean series to potentially outshine even the iconic Harry Potter franchise.

Rebecca Yarros' compelling storytelling has drawn in numerous new readers with the release of "Onyx Storm," highlighting the series' viral appeal. The perfect fusion of fantasy and romance continues to enthrall fans, making the Empyrean series a must-read for many.

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

Not only does the Empyrean series reign supreme on Kindle charts, but it also holds a strong position on Amazon's top-selling physical books list for 2025. Both the deluxe and standard editions of "Onyx Storm" rank in the top 10, while "Fourth Wing" secures a spot in the top 25. The release of Suzanne Collins' latest Hunger Games book has nudged "Onyx Storm" to the second spot in fiction, but with the growing number of new readers starting with "Fourth Wing," this ranking might shift once more before the year's end.

Fourth Wing and Iron Flame are Part of Kindle Unlimited

Kindle Unlimited

35. See subscription options.
36. See it at Amazon

For those eager to dive into the series, the first two books, "Fourth Wing" and "Iron Flame," are currently available for free through a Kindle Unlimited subscription. Subscribers can access these titles directly from their Kindle account, offering a fantastic opportunity to catch up on the series before "Onyx Storm" becomes a must-read phenomenon.