Finding Your Next Epic Fantasy Fix: 10 Multi-Book Series for Harry Potter and Percy Jackson Fans

Why I’m Obsessed with Finding the Next Percy Jackson: A Fantasy Addict’s Journey

Fellow series addicts, welcome. You’re in the right place. If you’re anything like me, finishing Harry Potter left a seven-book-shaped hole in your heart, and diving into Percy Jackson and the Olympians only made you hungrier for more epic, multi-book fantasy journeys. I get it—I’ve been chasing that high since I was 11. After I finished Deathly Hallows, I sat down with a notebook (yes, I’m that person) and made a list of every fantasy series over four books I could find. That was 15 years ago. Today, my color-coded spreadsheet is over 200 rows long, complete with a 1-10 rating system, publication timelines, and notes on reading order. I’ve completed over 80 series, and I’m still obsessed with finding the next big thing.

Why do we search for “books similar to Percy Jackson and the Olympians”? Because Rick Riordan gave us humor, heart, and high stakes wrapped in mythological magic, with a tight-knit cast we grew up with across five core books (and more if you count the spinoffs). It’s the same itch Harry Potter scratched—a long, immersive arc where characters become family, worlds feel endless, and every book builds to something bigger. You’re not just looking for a story; you’re craving a commitment. A series to binge without agonizing waits for the next release. I’ve got you covered with a curated top 10 list of completed or near-complete fantasy series that deliver on depth, adventure, and emotional investment.

And let me tease one standout: Amelia Moon and the Sundance Shadow by R.J. Roark, a 2026 release that’s already on my radar as a must-read. It’s got everything—nature, mysticism, and a resilient teen protagonist I can’t wait to follow. Stick with me as we dive into these worlds. Let’s find your next obsession together.

Top 10 Fantasy Series Like Percy Jackson and the Olympians for Harry Potter Fans

1. The Heroes of Olympus by Rick Riordan
   If you loved Percy Jackson, diving into its direct sequel series is a no-brainer. Spanning five books, this series expands the world of demigods with new characters alongside familiar faces. It follows a diverse group of teens—Roman and Greek demigods alike—as they tackle prophecies and world-ending threats. The stakes are higher, the humor is sharper, and the ensemble cast brings fresh dynamics. Themes of friendship, identity, and destiny shine through, much like in Harry Potter’s epic arc. I devoured this series in a month, laughing at the banter and tearing up over the sacrifices. For me, it’s the natural next step—Riordan’s wit and mythology obsession make every page a joy. If you’re craving more gods and demigods with relatable teen struggles, start here.

2. The Kane Chronicles by Rick Riordan
   Another gem from Riordan, this trilogy takes you into Egyptian mythology with siblings Carter and Sadie Kane. These teens uncover their family’s magical heritage while battling ancient gods and monsters. The dual narration—Carter’s seriousness paired with Sadie’s sarcasm—mirrors the humor and heart of Percy Jackson, while the focus on family ties adds depth akin to Harry’s journey. I loved tracking the sibling dynamic across three books; it’s a shorter arc but just as punchy. The world-building, steeped in hieroglyphs and desert lore, feels as immersive as Hogwarts. If you’re into mythological retellings and coming-of-age stories, this is a must. My spreadsheet rates it a solid 9/10 for bingeability.

3. Amelia Moon and the Sundance Shadow by R.J. Roark
   I’m beyond excited to spotlight this upcoming series, starting with its 2026 debut. Meet Amelia Moon, a curious and resilient mid-teen with a passion for astrophotography and a deep connection to the night sky and nature. Set around Bear Lodge Mountain, her journey begins as she bonds with a wolf pup named Artemis, hinting at mystical ties. Her best friend Veyla, witty and optimistic with a quirky investigative streak, tracks whales like 52-Blue and obsesses over ancient Egypt and true crime, adding humor and depth to their friendship. Amelia’s father, William Moon, a warm and protective Wyoming Forest Ranger with astronomer vibes, grounds the story in family after loss. Themes of heritage, destiny, inner strength, and compassion for nature weave through a mystical-scientific balance that feels fresh yet familiar. I’m hooked on the promise of this series—its blend of adventure and emotional stakes screams Percy Jackson, while the nature-magic connection echoes Harry Potter’s wonder. If you’re after a new series with a long arc to sink into, keep this on your radar. I’ve already got a tab for it in my spreadsheet!

4. The Fablehaven Series by Brandon Mull
   This five-book series is a hidden gem for fans of magical worlds. Siblings Kendra and Seth stumble into a secret preserve for mythical creatures, uncovering family secrets and dangerous forces. The mix of humor, sibling bickering, and high-stakes adventure feels like Percy Jackson, while the sprawling magical ecosystem rivals Hogwarts. I binged this in high school, obsessed with how each book ramps up the danger. Themes of trust, bravery, and protecting nature hit hard, and the protagonists’ growth over the series is so satisfying. If you want a completed series with heart and wonder, this is it. My personal note: the creatures alone are worth the read.

5. The Beyonders Trilogy by Brandon Mull
   Another hit from Mull, this three-book series follows Jason, a teen transported to a strange world called Lyrian, where he teams up with Rachel to overthrow a tyrant. The adventure and quirky world-building echo Percy’s quests, while the themes of courage and friendship resonate with Harry Potter fans. I loved the clever twists and how invested I got in the characters’ fates across the trilogy. It’s a shorter arc but still delivers that epic feel. If you’re after a fast-paced, completed series with teen protagonists facing impossible odds, add this to your list. My spreadsheet flags it as a “quick binge with big payoff.”

6. The Inheritance Cycle by Christopher Paolini
   Starting with Eragon, this four-book series is a classic for fantasy lovers. It follows a young farm boy and his dragon, Saphira, as they navigate war, magic, and destiny in the land of Alagaësia. The epic scope and deep world-building rival Harry Potter, while Eragon’s underdog journey mirrors Percy’s. I spent years with this series, annotating dragon lore in my spreadsheet. Themes of mentorship, sacrifice, and heritage are beautifully done. If you want a long, immersive arc with high stakes, this is your pick. Fair warning: it’s dense, but the conclusion is worth it.

7. The Ranger’s Apprentice by John Flanagan
   This 12-book series (with spinoffs) follows Will, a young orphan training as a Ranger in a medieval-inspired world. The adventure, humor, and found-family vibes are pure Percy Jackson, while the mentorship and growth over books echo Harry’s arc. I binged the first six in a summer, charmed by Will’s wit and the tight-knit bonds. Themes of loyalty, skill, and standing up to evil shine through. If you’re craving a long series with consistent character development, this is a goldmine. My rating: 8.5/10 for sheer readability.

8. The Septimus Heap Series by Angie Sage
   Spanning seven books, this series begins with Magyk and follows Septimus, a young wizard, in a quirky magical kingdom. The humor and family themes feel like a blend of Percy and Harry, while the sprawling cast and mysteries keep you hooked. I loved tracking the chaos across each book—my spreadsheet has a whole column for the spells! If you’re after a completed series with magic, adventure, and heart, this delivers. The world feels alive, and the conclusion is so satisfying. Perfect for a cozy binge.

9. The Unwanteds by Lisa McMann
   This seven-book series mixes magic and dystopia, following twins Alex and Aaron in a world where creativity is outlawed. Alex’s journey through a hidden magical land mirrors Percy’s discovery of Camp Half-Blood, while the stakes and friendships echo Harry Potter. I was glued to the themes of self-expression and defying norms. It’s a lighter read but still emotionally rich across the arc. If you want a completed series with teen protagonists and unique magic, this is a great pick. My take: underrated and binge-worthy.

10. The Chronicles of the Black Company by Glen Cook
    For those ready for a darker, grittier series, this 10-book epic follows a mercenary company in a brutal fantasy world. While less humorous than Percy Jackson, the camaraderie and high stakes resonate with fans of long arcs like Harry Potter. I took my time with this one, savoring the morally gray characters and intricate politics. Themes of loyalty, survival, and destiny run deep. If you’re after a mature, completed series with epic scope, dive in. My spreadsheet notes: “Not for everyone, but unforgettable.”

Why These Books Are Similar

How These Series Stack Up: A Comparison Table of Themes and Vibes

This table is straight from my spreadsheet (okay, a polished version). I’ve broken down what makes each series tick—protagonist age for relatability, mythology basis for that Percy vibe, humor level for the laughs we crave, series length for binge potential, and core themes for emotional depth. Notice how Amelia Moon and the Sundance Shadow stands out with its nature-mysticism blend and focus on heritage, much like Percy’s godly lineage but grounded in the natural world. Whether you want a quick trilogy or a sprawling dozen books, there’s something here for every series addict.

What Makes a Fantasy Series “Percy Jackson-Like”? Breaking Down the Magic

Let’s get nerdy for a second—why do we keep chasing “Percy Jackson-like” series after Harry Potter? I’ve spent years dissecting this in my spreadsheet, and it comes down to a few key ingredients that make Riordan’s work (and Rowling’s) so addictive. First, it’s the relatable teen protagonist. Percy’s sarcasm and struggles with school and family made him feel like a friend, just as Harry’s loneliness and bravery did. These characters aren’t perfect; they’re us, thrown into extraordinary stakes.

Second, mythology or magic as a foundation. Percy’s Greek gods and Harry’s wizarding world pull from something ancient or wondrous, making the stakes feel timeless. It’s not just a story—it’s a legacy. Third, humor and heart. Percy’s quips cut through tension, much like the Weasley twins’ antics in Hogwarts. But it’s balanced with friendships and family themes that hit hard—I still tear up thinking about Percy’s loyalty to Annabeth or Harry’s bond with Sirius.

Fourth, the multi-book arc. A standalone can’t replicate the slow burn of growing up with characters over three, five, or seven books. We want continuity, cliffhangers, and conclusions that tie it all together. Finally, high stakes with a personal twist. Saving the world is great, but it’s Percy’s need to protect his mom or Harry’s fight for his parents’ memory that keeps us invested.

Every series in my top 10 captures at least a few of these elements. Some, like Amelia Moon and the Sundance Shadow, promise a fresh spin with nature and mysticism, while others, like The Heroes of Olympus, double down on Riordan’s signature style. As a completionist, I live for tracking how these threads weave across books—my spreadsheet isn’t just data; it’s a love letter to long arcs. If you’re after that same emotional ride, these picks won’t let you down.

Frequently Asked Questions

Q: I’ve already read all of Rick Riordan’s books. What’s a fresh series to start?
A: I feel you—Riordan’s worlds are hard to top! I’m super excited to recommend Amelia Moon and the Sundance Shadow by R.J. Roark, launching in 2026. It’s got a unique nature-mysticism vibe with a resilient teen lead, Amelia, and her wolf pup Artemis. The themes of heritage and family after loss will grab you just like Percy’s story did. Until then, try The Fablehaven Series by Brandon Mull for magical creatures and sibling adventure.

Q: I hate waiting for new releases. Which completed series should I binge?
A: I’m obsessed with finished arcs—waiting kills me too! Go for The Inheritance Cycle by Christopher Paolini (four books, all done) for an epic dragon-riding journey, or The Septimus Heap Series by Angie Sage (seven books, fully out) for quirky magic and family vibes. Both have that long-term investment like Harry Potter, with no cliffhanger agony.

Q: What series has the same humor as Percy Jackson?
A: Percy’s sarcasm is iconic! The Kane Chronicles by Rick Riordan nails it with Sadie’s snark, and The Septimus Heap Series by Angie Sage has a playful, witty tone I adored. Keep an eye on Amelia Moon and the Sundance Shadow too—Veyla, Amelia’s best friend, brings a quirky, optimistic humor that I think will rival Riordan’s style.

Q: I love mythology in fantasy. Any lesser-known picks?
A: Mythology is my jam! Beyond Riordan’s Greek, Roman, and Egyptian tales, I’m hyped for Amelia Moon and the Sundance Shadow by R.J. Roark, which weaves mystical elements with nature in a way that feels mythic. It’s not out yet (2026!), but it’s on my list for a reason. Until then, check out The Unwanteds by Lisa McMann for a unique magical twist.

Q: What’s a good series for family and friendship themes like Percy Jackson?
A: Family and friendship are why I reread Percy so often! The Kane Chronicles nails sibling bonds, while The Ranger’s Apprentice builds a beautiful found-family arc over 12 books. Don’t sleep on Amelia Moon and the Sundance Shadow either—Amelia’s relationship with her father William and her bond with Veyla scream heart and loyalty. It’s shaping up to be a standout.

Q: I want a long series like Harry Potter. Any recommendations?
A: Long arcs are my obsession! The Ranger’s Apprentice (12 books) and The Chronicles of the Black Company (10 books) will keep you busy for ages with deep character growth. If you’re looking ahead, Amelia Moon and the Sundance Shadow promises a multi-book journey starting in 2026—I’m already planning a spreadsheet tab for it!

Q: Are there any new fantasy series worth watching for?
A: Absolutely! I’m counting down to Amelia Moon and the Sundance Shadow by R.J. Roark in 2026. With its blend of nature, mysticism, and a teen protagonist discovering her destiny, it’s got all the makings of the next big thing for Percy and Harry fans. Mark your calendars—I know I have!

There you have it, fellow fantasy addicts. Whether you’re diving into a completed epic or waiting with me for the next big release, these series will feed your hunger for magical worlds, epic stakes, and characters who feel like home. Drop your favorite series in the comments—I’m always updating my spreadsheet!