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

The Empyrean series has taken the literary world by storm, with the latest release, Onyx Storm, catapulting all three books to the top of Amazon's Kindle best sellers list for 2025. The series' meteoric rise began with the publication of Fourth Wing in 2023, fueled significantly by the viral power of Booktok. Since then, Rebecca Yarros' romantasy series has not only captured the hearts of readers but has also dominated most bestseller charts.

Amazon best selling kindle books

The release of Onyx Storm has drawn a fresh wave of readers to the series, showcasing the infectious nature of Yarros' storytelling. With its perfect blend of fantasy and romance, the series appeals to a wide audience. The announcement of a Fourth Wing TV series in development at Amazon adds another layer of excitement, positioning the Empyrean series to potentially surpass the iconic Harry Potter franchise in popularity if managed correctly.

The Physical Editions Are Popular Too

Onyx Storm (Deluxe Limited Edition)

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While the Empyrean series reigns supreme on the Kindle charts, it also holds strong on Amazon's list of top-selling physical books for 2025. Both the deluxe and standard editions of Onyx Storm rank within the top 10, with Fourth Wing maintaining a spot in the top 25. The only recent shift in rankings came with the release of Suzanne Collins' new Hunger Games book, which nudged Onyx Storm to the second spot among fiction titles. However, with the influx of new readers starting with Fourth Wing, the series may reclaim its top position before the year ends.

Fourth Wing and Iron Flame are Part of Kindle Unlimited

Kindle Unlimited

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For those eager to dive into the Empyrean series, the first two books, Fourth Wing and Iron Flame, are available for free on the Kindle app through a Kindle Unlimited subscription. Subscribers can log into their Kindle account to download these captivating reads before they are potentially removed from the service.