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Legends of Avallen - Core Rulebook - PDF


“From that island at the end of the world, no soldier returned without tales of wonder. Walking forests, talking fae, enigmatic shapes half man and half beast; things that you ought not to believe unless you see them yourself.” —Kaato the Sage on the invasion of Avallen

Inspired by Celtic mythology in Roman Britain, Legends of Avallen is a roleplaying game that takes you to a mystical island occupied by faithless invaders. For now, peace has been called but it balances on a sword’s edge as all seek to tame the Otherworld—a parallel realm home to fae, demons, dragons, and gods.

On Avallen, the greatest legends rise from humble beginnings, and yours will be no different. The shepherd ordained as a Druid, the bard reborn as a Fae Touched, the thief who found glory as a Gladiator. What tales will be told of you? Will you mend the rifts between worlds, or delve into their depths for fame, fortune, and power?

Legends of Avallen is a complete tabletop roleplaying game in one incredibly illustrated 244-page book.

You will receive this PDF upon completion of your order so you can start playing right away!


  • Quick character creation with deep character growth. Witness your humble townsperson rise into legend with 40 profession, martial, magic, and legendary ability schools.
  • Engaging mechanics that reward ingenuity. Setup allies in combat, uncover motivations in parleys, craft gear from slain monsters, and navigate risks on epic journeys.
  • An original ruleset that needs just a deck of regular playing cards. Get creative with your surroundings and work together with your friends to earn more cards for checks.
  • Extensive guides, tools, world lore, and a bestiary full of Celtic creatures to help Gamemasters craft their own unique quests.
  • Includes “Quest for the Sealing Stone”, an introductory adventure that teaches your aspiring heroes the game rules as you play.
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Reviews (0)
Discussions (6)
Customer avatar
Tony N September 28, 2022 7:34 am UTC
Is there a card deck to go with the book? I think a standard card deck would rather break my immersion in the setting. And is one card deck sufficient for the table or do you need one per player?
Customer avatar
Adder Stone Games . November 22, 2022 11:56 am UTC
Hi Tony, apologies for the late reply!

There was a deck to go with the original book but it was a Kickstarter exclusive. However, we have just finished our second Kickstarter for a Celtic campaign book and it included a new deck of cards. This one is not Kickstarter exclusive and you can check it out here for pre-order:

And yes, one deck is sufficient for the table, but you can also play with one deck each if its more convenient (large tables come to mind).

Let me know if you ponder anything else!

- Deren
Customer avatar
Tony N November 22, 2022 1:44 pm UTC
Thanks Deren - I've put the game and the scenario and the card deck on my wishlist. I need to start saving.
Customer avatar
Abraham Z January 29, 2022 10:21 pm UTC
A Celtic mythology inspired roleplaying game! Deren, if you are reading this, is there an email where I can contact you, I would love to feature this in my Youtube channel.
Customer avatar
Adder Stone Games . January 30, 2022 10:14 am UTC
Hi Abraham, sure! If you go to my website,, you can find a bunch of ways to contact me directly or through social media in the top right.

Customer avatar
Adam L January 27, 2022 8:06 am UTC
In the intro to the book the text mentions that the Welsh terms in the book will have pronunciation guides next to them. This is a lie. The four terms and a scant few others are given guides, but the rest like Twm Cwfl or Côr y Cewri do not receive guides. There is a guide at the front of the book, but having to flip back to reference it multiple times trying to puzzle out a word in the GM Lore section is a bit frustrating.

The book is good, don't get me wrong, I'm looking forward to running this as a freshener for my regular group. It's just patently untrue when the book says it has pronunciation helpers for most words.
Customer avatar
Adder Stone Games . January 28, 2022 4:48 pm UTC
Hi Adam,

I'm glad to hear you are enjoying the book and that you're looking forward to playing the game! This is our first RPG, and we are extremely proud of it, especially given its limited Kickstarter budget. But I'll happily be the first to say the book isn't perfect.

With regards to the pronunciation guides, I'm sorry for your frustration. Though I think lie is a strong word (we had no intent to deceive our players!) I will admit we made a mistake here. Many important Welsh words related to rules and concepts for the game do have pronunciation guides, such as in the section explaining social hierarchies and the bestiary. We deliberately didn't use any pronunciation guides in any of the many stories or creative texts in the book, though this is something we may reconsider for future projects. However, following your comment, I looked through the lore chapter and was dismayed to find you are completely right, there are hardly any pronunciation guides there. And as you say, there really...See more
Customer avatar
Adam L January 29, 2022 8:53 am UTC
You're right, lie is a strong word. It was (is again, now) 2am, I was feeling pithy and uncharitable, I felt bad the next day and rated five stars. The video would be pretty helpful since a lot of Welsh dictionaries rely on automatic readers that don't *quite* nail it.

This is extremely well done for your first book, the cards work quite a bit better than I would've thought on first read. If you're planning on Class (one additional base class per stat would be neat, but obviously a lot of design work) or Setting (Directly after the Raxian Empire landed, or perhaps an Avallen in open war and how that affects the Otherworld) expansions I would be keeping a keen eye out for them, otherwise as a standalone book I'm more than happy to give it a favored spot in my collection once I get it in hardcover.

Customer avatar
Adder Stone Games . January 29, 2022 1:51 pm UTC
...See more
Customer avatar
Stephen H January 26, 2022 5:40 pm UTC
That is a very pretty cover. I'd like a physical copy though.
Customer avatar
Adder Stone Games . January 28, 2022 4:52 pm UTC
Hi Stephen,

Thanks! I must say it looks even better in person with the art wrapping around the back!

As Chris mentioned in another reply, there are currently physical copies available directly through Modiphius, and they will also be made available through local stores soon.

- Deren
Customer avatar
Ingo H January 26, 2022 3:38 pm UTC
Neither here or on their homepage Mophidius tells something about the system/mechanics, just that they are "engaging". As this game is not listed under their 2d20-line, it's not written for that system, I suppose. So, what is it, then?
Customer avatar
Eric P January 26, 2022 4:20 pm UTC
The game uses a playing card-based mechanic. I've read the basics but need to play a game to see how well designed it is.
Customer avatar
Wickus B January 26, 2022 4:34 pm UTC
Modiphius is the distributer and publisher for the game by Adder Stone Games. Its not their IP
Customer avatar
Jane M January 28, 2022 5:06 pm UTC
It says in the description above, 3rd bullet point: "An original ruleset that needs just a deck of regular playing cards."
Customer avatar
Adder Stone Games . January 28, 2022 5:21 pm UTC
Hi Ingo,

Thanks for the comment! As the others have said, this is an original ruleset that we (Adder Stone Games) have made and it uses only a deck of playing cards. I can explain a bit more:

- Simply put, when you make a check you flip one more cards from the deck. Red cards help physical checks while black cards help mental checks.

- One key part of the rules is the ability to use your surroundings and teammates to your advantage, granting you many more cards to flip for checks. This encourages teamwork and engaging with your environment.

- Another key part of the rules is that you can turn failures into success by sacrificing equipment or exerting your character, which of course means it is a limited resource with consequences. This leads to heroic Celtic gameplay where you manage to succeed a quest but make it through with almost nothing left to give!

If you're curious to learn more, you can read further on our mechanic's blog post here: more
Customer avatar
Christian N January 26, 2022 3:20 pm UTC
Will there be a printed version available for retailers (I like supporting my local brick and mortar store) or as POD (preferably HC)?
Customer avatar
Chris B January 26, 2022 3:28 pm UTC
There is yes coming through normal distribution channels soon
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File Last Updated:
January 19, 2022
This title was added to our catalog on January 26, 2022.