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, which took off with the publication of *Fourth Wing* in 2023, owes much of its success to the viral sensation of BookTok. Since then, Rebecca Yarros' romantasy series has captured the hearts of readers, dominating bestseller charts with its perfect blend of fantasy and romance.

The release of *Onyx Storm* has not only attracted new readers but has also underscored the viral appeal of Yarros' storytelling. The series' broad appeal is evident as it entrances a wide range of readers. With a *Fourth Wing* TV series now greenlit at Amazon, the Empyrean series has the potential to surpass even the legendary Harry Potter franchise, provided it capitalizes on its momentum.

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 reigns supreme on the Kindle charts, it also holds strong on Amazon's top selling physical books list for 2025. Both the deluxe and standard editions of *Onyx Storm* rank in the top 10, with *Fourth Wing* maintaining its position in the top 25. The recent release of Suzanne Collins' new Hunger Games book has only nudged *Onyx Storm* to the second spot on the fiction list, but with more readers discovering the series through *Fourth Wing*, it may reclaim the top position before the year ends.

Answer See Results

Fourth Wing and Iron Flame are Part of Kindle Unlimited

Kindle Unlimited

35. See subscription options. See it at Amazon

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