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' meteoric rise began with the 2023 release of Fourth Wing, which gained massive popularity on Booktok. Since then, Rebecca Yarros' romantasy saga has consistently dominated best seller charts, captivating readers with its perfect blend of fantasy and romance.

Amazon best selling kindle books

The viral nature of Yarros' writing has attracted a diverse readership, and the release of Onyx Storm has brought even more fans into the fold. With a Fourth Wing TV series now greenlit at Amazon, the Empyrean series is poised to potentially surpass the Harry Potter franchise in popularity if it continues to play its cards right.

The Physical Editions Are Popular Too

### Onyx Storm (Deluxe Limited Edition)

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Not only does the Empyrean series dominate the Kindle charts, but it also ranks among Amazon's top-selling physical books for 2025. Both the deluxe and standard editions of Onyx Storm are within the top 10, while Fourth Wing remains in the top 25. The series' momentum has only been slightly checked by the release of Suzanne Collins' new Hunger Games book, which has nudged Onyx Storm to the second spot on the fiction list. However, with more readers discovering the series through Fourth Wing, we might see Onyx Storm reclaim the top position before the end of 2025.

Are you going to read Onyx Storm? --------------------------------- Yes!No!I want to read the first two books first

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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 currently available for free on the Kindle app through a Kindle Unlimited subscription. Subscribers can easily log into their Kindle account and download these titles before they potentially leave the subscription service.