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 propelling all three books to the top of Amazon's Kindle best sellers list for 2025. The series gained massive traction following the release of Fourth Wing in 2023, thanks in large part to the influence of Booktok. Since then, Rebecca Yarros' romantasy series has become a staple on bestseller charts, captivating readers with its perfect blend of fantasy and romance.

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

While the Empyrean series dominates the Kindle charts, its physical editions are also making waves, ranking high on Amazon's top-selling physical books list for 2025. Both the deluxe and standard editions of Onyx Storm hold positions in the top 10, with Fourth Wing not far behind at number 25.

The recent release of Suzanne Collins' new Hunger Games book has shifted Onyx Storm to the second spot on the fiction list, but with an influx of new readers discovering the series through Fourth Wing, it's possible we'll see a resurgence before the end of 2025.

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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, Fourth Wing and Iron Flame are available for free on the Kindle app through a Kindle Unlimited subscription. Subscribers can easily access these titles by logging into their Kindle account and downloading them before they potentially leave the subscription service.