Resource: ?
From 5 reviews
Game: B
From 68 reviews

Sea Kings

2nd Edition

A Free Fan-Made One Piece Supplement for the Agon RPG

Publisher Description

 SEA KINGS is a magical pirate adventure playset for the PARAGON system from the AGON roleplaying gameA copy of AGON is required to play. For more on the PARAGON system, including how to publish your own playsets, visit

On Riknoumi the Sea Kings rule. In this far off world the Age of Destruction dawned when a group of pirates, thousands of years ago, discovered the legendary treasure that unlocked ascension and the awakening of birthseals. At the awakening of the birthseals, every race had children born with and strange marks which destined them for an obsession with traveling the seas with a goal of gaining ascension.  After many years of war, eight kings were established and all that remained of the world were islands controlled by those eight. Each Sea King found ascension, leaving their territories protected and in a state of peace. Many thought the wars were over until the Sea Kings became bored and wanted a new challenge. So they spread news to every Island a simple challenge: “Take control of our lands and ascend to join us, good luck”.

The Age of Pirates dawned with this declaration. Born with the birthseal, you gather your crew, and begin your path towards ascension. What is the pirate life to you? Freedom? Adventure? Power? Peace?


An Ancient Greek Naval RPG With a One Piece Supplement [ edit ]

Agon is essentially an RPG take on the Ancient Greek novel The Odyssey.  Just like Odysseus in that story ...

On their way back home from the war, the heroes have become lost among strange islands populated by mythical creatures, dire beasts, treacherous landscapes, legendary kingdoms, and desperate people—all somehow cursed or abandoned by the cruel power of the capricious gods.

As such, Agon doesn't exactly scream "One Piece".

However, the basic setting still has a great deal in common with the anime (mythic heroes facing adventures on the open sea) ... which helps to explain why Luke Edgemon chose to make a One Piece-inspired play setting for Agon.

A Game (or at Least a Supplement) Made for One Piece [ edit ]

Aggregated Review Scores

SourceAverage Score# of ReviewsAs Of
Itch.io5 / 557/29/2022

While other games might give you a European pirate setting, or a generic set of rules, and ask you to adapt them to One Piece, Sea Kings is instead an entire Agon playset made for One Piece!  Even its name is a One Piece reference, and its publisher blurb explicitly says (emphasis added):

SEA KINGS modifies the awesome PARAGON system to a world of magical pirate adventure with a main inspiration from the legendary world of One Piece. Wield your random BIRTHSEAL, decide your JOLLY ROGER, and embark on your path to ASCENSION!

Is that playset any good?  That's hard to say: Sea Kings is relatively new (having only been released in 2021), and it is only published on, where it currently has only five reviews.  But on the plus side, those five reviews are uniformly positive, with an average of 5 /5 stars.

So if you're looking for a game where One Piece is the primary inspiration of a gaming product, and not just an adaption you can make ... and you're not afraid to try a (completely free) fan-made supplement ... Sea Kings (and the core Agon rules) might be just what you want for your next One Piece campaign.