Adder Stone Games, based in Cardiff, Wales, creates the Celtic RPG, Legends of Avallen, and its epic campaign book, Against the Faerie Queene.

Against the Faerie Queene

Against the Faerie Queene is an epic fantasy campaign book full of Celtic mythology and new character options for heroes of levels 3-10 in Legends of Avallen or 5th Edition.

Be swept across the Celtic-Roman inspired clanlands of Avallen in a branching, fifteen-part adventure where the fate of both mortals and the divine hang in the balance. Your heroes will slay beasts in a mythical hunt, embroil themselves in royal politics, strategise daring heists, encounter unthinkable horrors, and finally stand against the Faerie Queene in a dungeon delve where her dark ambitions come to fruition.

Legends 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.

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• 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.
• 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.
• 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.

Adder Stone Games

Founded by Deren Ozturk while completing his PhD in physics, Adder Stone Games began developing Legends of Avallen to introduce new players to RPGs with a game inspired by Deren's Welsh locale.

Adder Stone Games is now partnered with Modiphius and has a diverse group of talented people working across four continents to bring these local legends to life!