Forgotten Lore: Celtic One-Shots

BACK BY POPULAR DEMAND!

This is a collection of 30 complete, one-page one-shots built for immediate play for Dungeons & Dragons 5th Edition.

Each scenario is self-contained, mechanically light, and rooted in ancient Irish myth, ritual law, and land-bound consequence.

Designed to drop into an existing campaign or stand alone as single-session stories, each one is rooted in clan conflict, sacred rites, bog gods, storm kings, or the old laws of the earth.

Perfect for use with The Celtic Grimoire ...

...or any other Celtic themed TTRPGs!

From the Same World as the Celtic Grimoire

These one-shots stand far from alone.

They come from the same world as The Celtic Grimoire - a larger body of work built on magic, ritual, land, and consequence.

Where this project offers moments, The Celtic Grimoire offers the weight behind them.

But don't worry, you can get both today!

WHAT IS THIS?

30 one-page adventures designed for immediate play, built entirely around core D&D 5e mechanics. Each one is tight, focused, and complete - a full session distilled into a single page, ready to drop into your game at any moment.

How these One-Shots are built

Each one-shot is shaped by two core ideas. At the top of every page you'll see two symbols, chosen from five:

• Ritual
• Combat
• Politics
• Exploration
• Spirit

They tell you what’s really driving the scenario.

Some are built around a ritual that needs to be completed or broken. Others revolve around a dispute that can turn violent if handled poorly. Some lean into the land, or rather, what moves beneath it.

Most situations aren’t clean. A ritual can become a fight. A negotiation can draw something older into the open. A journey can turn into a reckoning.

The two symbols give you a sense of where it begins and what kind of pressure the players are stepping into. The conclusions give you options to see how your story plays out.

You will find:

• Ritual duels at stone circles
• Clan feasts where ravens speak
• Warbands sworn to silence
• Rivers that demand living offerings
• Rowan vigils beneath watching roots
• Bog wolves bound in god-flesh
• Storm-sworn kings judged by lightning
• Crowns that drown their wearers

Each page gives you:

• Setup, Location, Hooks
• Gameplay Mechanics
• Consequences that go beyond the session

FEATURED ONE-SHOTS

The Hollow Feast

Each autumn, the people of Gleann Fáel set their tables for the dead. This year, every seat is filled. 

The fire burns low, the plates are laid, and the names carved into the wood no longer belong to memory alone. The guests have come, silent, hollow, and waiting to be fed. . They hunger for more than food, they hunger for warmth.

To take part is to sit among them. To refuse is to leave the village to its fate. The longer the feast goes on, the thinner the line becomes between host and guest, living and dead. 

If the last candle is left to extinguish, something in the hall will decide who remains.

The Warband

Torches? No. Voices? No. Not even breath given freely to a cool night. 

The warband of Cairn Dair marches beneath starlight, bound by an oath of silence so severe each man has burned his own tongue to keep it. They do not speak of their purpose, only move toward it. Step by step, night after night, through a land that has begun to listen back.

At first it is only an invasive thought. Then the shapes appear.

Shadows move where no one walks. Words are whispered that no one dares to say. With every night, the warband grows thinner, as though something is taking them in place of the silence they keep.

The oath was meant to lead them to vengeance.

Now it is deciding who will be left to carry it.

The Storm

Two kings come to the edge of the world to swear peace.

The cliffs of Tír Maon rise above a black sea, the wind strong, and the thunder loud. The sky is waiting. Each king carries a truth he would rather leave unspoken. The druids warn that the oath will bind more than words.

Here, the storm rages.

Lightning strikes at the first lie, the first falter, the first moment where oath and truth part ways. When it comes, it will not ask who is guilty.

And when the sky breaks, only one thing will remain certain - the land remembers what was sworn upon it.

These are not isolated tales.

They are bound by land, oath, and divine consequence.

WHAT YOU GET

30 One-Page Celtic One-Shots (PDF)

• Formatted for clarity and speed at the table.
• Designed for 5e-compatible systems
• Fully adaptable to other fantasy TTRPGs
• Consequences for player choice
• No filler pages
• Clean layout
• Instant digital delivery

Every page is playable in a single session.

Every outcome leaves a mark.

The most successful Forgotten Lore book to date, The Celtic Grimoire is a deeper exploration of Celtic ritual magic, land-bound power, and mythic consequence.

If these one-shots speak to you, then The Grimoire is where the roots go deeper.

This campaign gives new backers an easy entry into Forgotten Lore and returning backers a sharp, focused expansion to their existing collection.

Small offering. Larger world.

REWARDS & DELIVERY

30 One-Page Celtic One-Shots (PDF)

• Delivered digitally
• PDF Delivery: Within 2–3 weeks after funding

The Celtic Grimoire (PDF & Print-on-Demand)

• PDF Delivery: Within 2–3 weeks after funding
• Access to purchase the printed copy (Softcover or Hardcover) from DriveThruRPG: Within 2–3 weeks after funding

This project is already written and ready to go.
You are backing final polish and release.

PRINTING & FULFILLMENT

The Celtic Grimoire marked a historic moment for this beloved series, bringing the rich magic and mythology of Celtic spellcasting into your hands in a beautifully crafted physical edition.

• Measures 8.5"x11"
• Full colour interior pages
• Over 150 pages
• POD available in softcover or hardcover

Print on Demand Discount Code for Drivethru RPG:  Receive a discount code for a Print on Demand version of the Celtic Grimoire through DriveThruRPG. We offer backers of this tier access to order the physical copy of this book directly through Drivethru RPG - this allows us to keep our costs low, and in turn, keep costs lower for you by buying the book at cost + shipping.

You will be required to pay seperately for printing and shipping at a future date with Drivethru RPG once the book is available.

IMPORTANT: Backers will receive at-cost codes to purchase printed books directly from DriveThruRPG once print proofs are approved. 

The current DriveThruRPG cost is -

• Softcover (standard colour): $13 + shipping
• Hardcover (standard colour): $18+ shipping
• Softcover (premium colour): $22+ shipping
• Hardcover (standard colour): $28+ shipping

$13 - 28, plus shipping fees, which backers will cover at the time of purchase.

Thanks to their worldwide printing and delivery services, you will benefit from competitive shipping rates. More info on their delivery rates can be found here.

Add-ons: Celtic TTRPG Projects

All of our previously funded Celtic TTRPG Projects are available to purchase as an add-on. This comprehensive collection is a treasure trove for fans and new explorers alike, providing a complete experience of our Celtic-themed world.

Check out all of our previous Forgotten Lore projects here!

• Unlock an entire library of unique RPG content, packed with worldbuilding, mechanics, and powerful spells.
• Expand your storytelling tools with additional Forgotten Lore supplements, adding new magical concepts, creatures, and settings.
• Instant Digital Access: No waiting - download everything as soon as it’s ready!

Eclipse of the Sun: 

A three session DND 5e campaign, set in a rich and detailed Celtic world, designed to be played by a party of four to five adventurers of levels 3-6.

Eclipse of the Sun - Kickstarter Page

Celtic Collections:  

A system neutral Celtic source book: 100 one-page Locations, NPCs, Weapons & Armour, Magic Items and Spells for TTRPG and World Building.

Celtic Collections - 100 System neutral Celtic Locations, NPCs, Weapons & Armour, Magic Items and Spells

Celtic Adventures: 

A compendium of 150 Celtic adventure and quest ideas, weaving ancient myths into epic tabletop adventures.

Celtic Adventures - 150 Celtic themed quest ideas

Celtic Chronicles: 

A 5e source book including Classes, Quests, Locations & Lore inspired by the dark history of Irish and Celtic folklore.

Celtic Chronicles - 120 page Sourcebook with two unique classes

Celtic Monstrosities: 

A 5e bestiary of ancient and evil beasts and monsters, inspired the dark history of Irish and Celtic folklore.

Celtic Monstrosities - 80 pages of monsters, creatures & beasts