The Empyrean series has soared to new heights with the recent 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' meteoric rise began with the publication of *Fourth Wing* in 2023, largely fueled by the viral sensation of Booktok. Since then, Rebecca Yarros' romantasy series has captivated a vast audience, blending fantasy and romance in a way that appeals to a broad spectrum of readers. The announcement of a *Fourth Wing* TV series greenlit at Amazon adds to the series' momentum, offering the potential to surpass even the iconic Harry Potter franchise in popularity if it continues to play its cards right.
Amazon best selling kindle books
The release of *Onyx Storm* has attracted a surge of new readers, underscoring the viral nature of Yarros' storytelling. This success is not limited to digital formats; the series also dominates Amazon's top-selling physical books list for 2025. Both the deluxe and standard editions of *Onyx Storm* are firmly in the top 10, while *Fourth Wing* remains a strong contender within the top 25. Only the recent release of Suzanne Collins' new Hunger Games book has nudged *Onyx Storm* to the second spot on the fiction list. However, with more readers discovering the series through *Fourth Wing*, there's a possibility that *Onyx Storm* could reclaim the top position before the year's end.
Onyx Storm (Deluxe Limited Edition)
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AnswerSee ResultsFor those eager to dive into the Empyrean series, *Fourth Wing* and *Iron Flame* are available for free through a Kindle Unlimited subscription. Subscribers can easily access these titles on the Kindle app, providing an excellent opportunity to get hooked on the series before the books potentially leave the subscription service.
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