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

The Empyrean series has soared to new heights with the 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' surge in popularity began with the release of *Fourth Wing* in 2023, fueled significantly by the viral power of BookTok. Since then, Rebecca Yarros' romantasy series has captivated readers worldwide, dominating most bestseller charts with its enchanting blend of fantasy and romance.

The success of *Onyx Storm* has attracted a wave of new readers to the series, showcasing the infectious appeal of Yarros' storytelling. With a *Fourth Wing* TV series now greenlit at Amazon, the Empyrean series is poised to potentially eclipse even the Harry Potter franchise in popularity, provided it capitalizes on this momentum 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

While the Empyrean series continues to dominate the Kindle charts, it also holds strong positions on Amazon's top-selling physical books list for 2025. Both the deluxe and standard editions of *Onyx Storm* rank within the top 10, with *Fourth Wing* securing a spot in the top 25. The recent release of Suzanne Collins' new Hunger Games book has pushed *Onyx Storm* to the second spot on the fiction list, but with an increasing number of readers diving into the series via *Fourth Wing*, this ranking could shift again by the end of 2025.

Answer

See Results

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 delve into the series, *Fourth Wing* and *Iron Flame*, the first two books in the Empyrean series, are currently available for free on the Kindle app through a Kindle Unlimited subscription. Subscribers can easily access and download these captivating novels before they potentially leave the subscription service.