The Empyrean series has taken the literary world by storm, with the latest release, *Onyx Storm*, catapulting the entire trilogy 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, largely fueled by the viral sensation of Booktok. Since then, the romantasy genre has not only captured the hearts of readers but has dominated bestseller charts across the board.
The release of *Onyx Storm* has attracted a wave of new readers, showcasing the captivating blend of fantasy and romance penned by Rebecca Yarros. This unique combination has resonated widely, enchanting a diverse readership. With the recent greenlighting of a *Fourth Wing* TV series by Amazon, the Empyrean series is poised to potentially surpass even the iconic Harry Potter franchise in popularity, provided it continues to engage audiences effectively.
The Physical Editions Are Popular Too
Onyx Storm (Deluxe Limited Edition)
- See it at Amazon
- See it at Barnes and Noble
- See it at Target
While the Empyrean series excels on Kindle, it also claims a significant presence on Amazon's top-selling physical books list for 2025. The deluxe and standard editions of *Onyx Storm* both rank within the top 10, while *Fourth Wing* holds steady in the top 25. Only the release of Suzanne Collins' new *Hunger Games* book has nudged *Onyx Storm* to the second spot on the fiction list. However, with the influx of new readers starting with *Fourth Wing*, the rankings could shift back in favor of the Empyrean series by the end of 2025.
Answer See ResultsFourth Wing and Iron Flame are Part of Kindle Unlimited
Kindle Unlimited
- See subscription options.
- See it at Amazon
For those looking 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 access these titles by logging into their Kindle account and downloading them before they are potentially removed from the subscription service.
