Executive Overview
The speculative fiction landscape is undergoing a profound structural shift, characterized by the mainstreaming of serialized internet fiction and the enduring power of specialized genre communities. This transformation is vividly illustrated in the latest Locus Bestsellers report for the June 2026 data period.
The most striking revelation from the newly compiled data is the absolute dominance of author Matt Dinniman. Published by Ace Books, Dinniman’s Dungeon Crawler Carl series achieved an unprecedented sweep of the hardcover chart, capturing the top four positions simultaneously. This performance, mirrored by the flagship novel’s ascent to the number-one spot on the trade paperback list, signals that LitRPG (Literature Role-Playing Game)—a genre that originated in the corners of online self-publishing platforms—has officially cemented its status as a major commercial force in traditional brick-and-mortar retail.
Beyond the LitRPG phenomenon, the June 2026 data reveals a highly active and expanding market. Total nominations across all categories rose significantly, driven by a mixture of highly anticipated new releases, resilient backlist titles from science fiction heavyweights like Andy Weir, and a resurgence of classic media-related properties. In particular, the media and gaming-related category saw a dramatic battle for supremacy, with Black Library’s foundational Warhammer 40,000 novels, penned by Dan Abnett, reclaiming the spotlight.
Read Also
As independent and specialty bookstores across North America feed this data to Locus, the results provide an authoritative snapshot of genuine genre loyalty, free from the generalized algorithms of mainstream bestseller lists.
Detailed Category Breakdown
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LOCUS HARDCOVER BESTSELLERS (JUNE 2026)
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Pos Title Author Listings
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1) Carl’s Doomsday Scenario Matt Dinniman 6 months
2) The Gate of the Feral Gods Matt Dinniman 7 months
3) A Parade of Horribles Matt Dinniman 2 months
4) The Dungeon Anarchist’s Cookbook Matt Dinniman 6 months
5) Between Two Fires C. Buehlman 4 months
6) The Unicorn Hunters Katherine Arden 1 month
7) The Ballad of Falling Dragons Sarah A. Parker 2 months
8*) Platform Decay Martha Wells 2 months
8*) There Is No Antimemetics Division qntm 3 months
10) Radiant Star Ann Leckie 2 months
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* TIEHardcovers: The Dinniman Sweep and Genre Diversity
The hardcover category was completely redefined in June 2026 by Matt Dinniman’s historic run. The top four spots were claimed exclusively by installments of the Dungeon Crawler Carl series, a feat rarely seen in modern publishing.
- The Top Spot: Carl’s Doomsday Scenario (Book 2 of the series) ascended to number one, climbing from its third-place position last month. It has now spent six months on the chart.
- The Runner-Up: The Gate of the Feral Gods (Book 4) staged a massive re-entry to claim the second spot, having previously spent seven months on the list before a brief hiatus.
- Rounding Out the Top Four: A Parade of Horribles (Book 6) held steady at number three, while The Dungeon Anarchist’s Cookbook (Book 3) rose to number four.
This concentrated performance pushed several high-profile titles further down the list. Christopher Buehlman’s cult historical horror novel Between Two Fires (published by Tor Nightfire) maintained a strong presence at number five, proving its remarkable word-of-mouth staying power after four months on the chart.
New entries and notable returns populated the lower half of the top ten. Katherine Arden’s highly anticipated novel The Unicorn Hunters (Del Rey) debuted at number six. Sarah A. Parker’s romantic fantasy The Ballad of Falling Dragons (Avon) slipped to number seven in its second month.
A tie occurred at the eighth spot between Martha Wells’s Platform Decay (Tor)—which fell from its previous number-one spot—and qntm’s mind-bending sci-fi thriller There Is No Antimemetics Division (Ballantine), which re-entered the charts for its third non-consecutive month. Space opera veteran Ann Leckie rounded out the list at number ten with Radiant Star (Orbit US).
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LOCUS TRADE PAPERBACK BESTSELLERS (JUNE 2026)
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Pos Title Author Listings
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1) Dungeon Crawler Carl Matt Dinniman 6 months
2) Project Hail Mary Andy Weir 20 months
3) The Devils Joe Abercrombie 2 months
4) The Tainted Cup R. J. Bennett 13 months
5) The Martian Andy Weir 24 months
6) Bromantasy Máire Roche 1 month
7*) Court of Thorns and Roses Sarah J. Maas 47 months
8) Assassin’s Apprentice Robin Hobb 1 month
9) Red Rising Pierce Brown 15 months
10) Children of Time Adrian Tchaikovsky 19 months
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* TIETrade Paperbacks: LitRPG Clashes with Hard Sci-Fi Giants
The trade paperback list witnessed a highly competitive duel between modern LitRPG and established hard science fiction. Matt Dinniman’s flagship novel, Dungeon Crawler Carl, flipped the previous month’s hierarchy to claim the number-one spot, displacing Andy Weir’s blockbusting space adventure Project Hail Mary (Ballantine), which settled into second place.
Despite the slip, Weir’s dominance remains staggering: Project Hail Mary has logged 20 months on the bestseller list, while his debut novel, The Martian, re-asserted its evergreen status by climbing to number five in its 24th month on the chart.
Joe Abercrombie’s gritty fantasy The Devils (Tor) climbed to number three, demonstrating strong secondary-market momentum. Robert Jackson Bennett’s speculative mystery The Tainted Cup (Del Rey) returned to the chart at number four, bringing its cumulative total to 13 months.
The lower half of the paperback chart featured intriguing debuts and classic returns:
- Máire Roche’s Bromantasy (Putnam) made its debut at number six.
- Sarah J. Maas’s Court of Thorns and Roses (Bloomsbury US) tied for seventh, marking an astonishing 47 months on the list.
- Robin Hobb’s beloved classic Assassin’s Apprentice (Del Rey) made a surprise return at number eight, highlighting a renewed interest in classic high fantasy backlists.
- Pierce Brown’s dystopian epic Red Rising (Del Rey) occupied the ninth spot, while Adrian Tchaikovsky’s modern sci-fi classic Children of Time (Orbit US) re-entered at number ten.
Media and Gaming-Related: The Dan Abnett Show
In the specialized realm of media-related and gaming tie-in fiction, British sci-fi veteran Dan Abnett achieved a double victory. Two of his foundational Warhammer 40,000 novels, published by Games Workshop’s Black Library imprint, tied for the number-one spot.
Warhammer 40,000: Eisenhorn: The Omnibus returned to the list after a hiatus to claim a share of the crown, tying with Abnett’s seminal Warhammer 40,000: The Horus Heresy: Horus Rising, which spent its ninth month on the list.
The only other title to break through the Warhammer blockade was Critical Role: Tusk Love by Thea Guanzon (Random House Worlds), a fictional romance novel originating from the popular tabletop roleplaying web series, which claimed a close second place.
Supporting Context & Market Metrics
The June 2026 data points to an incredibly healthy, highly diversified speculative fiction market. One of the most telling metrics of industry health is the rise in nominated titles across all major categories.
Category Nominated Title Growth (May vs. June 2026):
Hardcovers: 45 ---> 51 (+13.3%)
Trade Paperbacks: 63 ---> 72 (+14.3%)
Media/Gaming: 15 ---> 20 (+33.3%)This broad increase in nominations suggests that reader interests are fragmenting into highly specialized sub-genres, and independent bookstores are successfully catering to these diverse tastes. Rather than a few monocultural blockbusters dominating sales, a wider array of titles are finding dedicated audiences.
The LitRPG Paradigm Shift
The sweeping success of Dungeon Crawler Carl highlights a massive industry shift. LitRPG—which blends traditional fantasy and sci-fi narratives with the explicit mechanics of role-playing games (such as stat sheets, leveling up, and inventory management)—was long dismissed by major publishing houses as a niche, internet-only curiosity. Authors typically built massive followings on platforms like Royal Road, Patreon, and Kindle Unlimited before self-publishing on Amazon.
However, the acquisition of physical print rights for Dungeon Crawler Carl by Ace Books (an imprint of Penguin Random House) changed the market dynamics. By bringing high-quality, beautifully designed hardcover editions of these internet sensations to physical bookstores, publishers have tapped into a ravenous, pre-existing fan base eager to own physical editions of their favorite digital series. The fact that multiple books in the series are charting simultaneously indicates that readers are buying the backlog in physical formats all at once, transforming internet-born intellectual property into traditional retail powerhouses.
Industry Perspectives & Retailer Insights
The Locus Bestsellers list is uniquely valuable because of how its data is sourced. Unlike mainstream bestseller lists, which compile data from massive, generalized retailers like Amazon and Barnes & Noble, Locus relies on a curated network of independent, specialty science fiction and fantasy bookstores across North America.
The data for this period was compiled from prominent indie hubs, including:
- Bakka-Phoenix Books (Toronto, Canada)
- Borderlands Books (San Francisco, CA)
- Book Moon (Eastampton, MA)
- McNally Robinson (Two locations in Canada)
- Mysterious Galaxy (San Diego, CA)
- Toadstool Bookshops (Two locations in NH)
- White Dwarf Books (Vancouver, Canada)
Specialty book dealers report that the physical presence of authors at local conventions, highly active online communities (such as Discord servers and Subreddits), and premium book designs are the primary drivers of physical SFF book sales.
"Specialty bookstores act as community centers," notes one industry analyst. "When an author like Matt Dinniman or Dan Abnett builds a deep, interactive relationship with their readers, those readers don’t just consume the digital content—they want to support the author by buying physical copies from their local indie store. That’s why we see these massive surges in specialized retail data that might not show up as clearly on generalized, algorithm-driven mainstream charts."
Future Outlook
Looking ahead, the lines between digital-first web fiction, gaming properties, and traditional publishing will continue to blur. The massive success of the Dungeon Crawler Carl hardcovers will almost certainly inspire rival publishing houses to aggressively acquire print rights for other popular LitRPG and progression fantasy web series.
Furthermore, transmedia adaptations are poised to reshape these bestseller lists in the coming years. With rumored television and film adaptations in development for properties like Dungeon Crawler Carl, and Games Workshop actively partnering with major studios for high-budget Warhammer 40,000 cinematic projects, these book series are likely to experience sustained sales spikes.
For independent retailers and genre publishers alike, the June 2026 data confirms a vital truth: the speculative fiction market is no longer driven solely by traditional gatekeepers. Instead, it is fueled by passionate, internet-native fandoms whose purchasing power is rewriting the rules of the bestseller lists.
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