Join us in Glorantha, Greg Stafford’s classic fantasy world of
richly imagined cultures, ferocious combat, and colliding mythologies.
Create your group’s unique Gloranthan campaign using 13th Age: the d20-rolling game of heroic fantasy, escalating combat, One Unique Things, and limb-ripping owlbears!
Developed by Rob Heinsoo and Jonathan Tweet.
For Game Masters, 13th Age Glorantha includes:
- More than 80 pages of monsters and enemies fully compatible with any 13th Age campaign, including Chaos priests, dragonsnails, scorpionmen, Crater Makers who call down the Moon, and the awesome Chaos demon known as the Crimson Bat.
- More than 60 pages of ready-to-run adventures and heroquests—venture into myth to refight the battles of the gods and gain their cosmic powers!
- A distinctive setting that will entertain longtime fans but is aimed at gamers who've never heard of Glorantha.
If you’re a 13th Age player you’ll find:
- 5 new classes, including the hell mother who summons Darkness spirits and giant spiders; the swordmaster Humakti who wields Death; and the trickster who (in theory!) funnels your bad luck onto your enemies.
- 5 new class variants, including the wind lord, a fighter with magical storm-related exploits; and the rebel, a rogue with the supernatural ability to get where he’s not supposed to be.
- 2 new PC races, the trolls and ducks, plus Gloranthan humans with new cultural traits.
IF YOU DON’T FIGHT, WE ALL DIE!

This is not a complete rule system
The 13th Age Core Rules are required to use this book. You can buy that from Pelgrane Press here.
What The Critics Say
- ISBN:
- 978-1-56882-500-7
- Edition:
- 13th Age First Edition
- Year Released:
- 2018
- Format:
- Color PDF
- Page Count:
- 466
- Author(s):
- Rob Heinsoo, Jonathan Tweet
- Cover Artist(s):
- Aaron McConnell & Lee Moyer
- Interior Artists:
- Jan Pospíšil, Dan Barker, Bernard Bittler, Mara Braun, Simon Bray, Caleb Cleveland, Jed Dougherty, Steve Ellis, Andrey Fetisov, Rich Fleider, Lisa Free, Chris Huth, Jennell Jaquays, Kalin Kadiev, Rachel Kahn, Jennifer Lange, Rhonda Libbey, Pat Loboyk
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Fun Take On Dragon Pass
The writing and game design show the authors love the setting. A lot of people were skeptical when it was announced in 2014 that they were going to make a Glorantha game that wasn't Runequest or Heroquest. At the time 13th Age was still relatively new. At the time, I didn't bother backing because I knew that 13th Age was designed in part by 4th Edition D&D's designer. I honestly kind of forgot about the whole thing, and expected it would end in vapors (like so many things Kickstarted). Flash forward to 2018, and I have been running Gloranthan campaigns using Dungeon Crawl Classics for a couple years. It's not perfect, but the home group enjoy it because it is something different than more RQ/HQ. Chaosium announced that 13G would be released at Gencon 2018 and that they would be running demos of the game. Then they announced shortly before the con that the GM had dropped out. I volunteered to run this game, sight unseen, just because I wanted to give the new game on the Glorantha block a fair shake. I got this book and the core 13th Age books about a week and a half before the con. Game demos are notoriously shallow affairs for the most part. A paper thin pretext for why the PCs would/should/can do xyz and some stats and maps are usually all they entail. This demo didn't even have that. Basically, characters each roll relationships with their runes at the beginning of the session. This part of the session got every group for which I ran the demo excited and talking with each other generating a plot that in each case was far better than any canned con scenario I've seen before. This is a great game. It takes a world I assume you already love if you've read this far, and puts a unique spin on it. It's half story stick, half very loose d20 style combat. There is just the right balance of structure and freeform...the style of your game is going to be your own at the end of the day. All the book does is give you the toolset to get on the way. The art is phenomenal. All this generation Chaosium books have been gorgeous since the restructuring a couple years ago, this one is no different. Clear layout, inoffensive underlay graphics and dozens of beautiful Glorantha themed art pieces plastered everywhere. The writing style is conversational. One of my biggest gripes with some Glorantha literature (mainly 90s-00s RQ/HQ stuff) is the stuffy scholarly tone. This book is written by gamers who like ducks and trolls and playing D&D. Felt to me like an issue of TOTRM with D&D stats in a lot of places, which made me happy. The book is thick. Clocks in around 450 pages. Great bargain for the price (like most of the current Chaosium run). Five Stars All Day and Red Moon Night