Influence · prediction · risk

The battlethat dividedthe realm.

A competitive trick-taking card game where every bid carries weight. Seize Conscriptions, wield the Ruling Class, and manage Corruption on the road to 35 Influence.

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戦の世

Three players · 30–40 minutes

Strategy carved
in ink and steel.

Predict how many Conscriptions you can claim, follow the led faction, and decide when the round’s Ruling Class is worth the risk. Win beyond your bid and Corruption follows.

Figures of the conflict

Four forces.
One realm.

Shogun, Ninja, Samurai, and Monk form the game’s four color-coded factions. Select one to bring it forward.

SELECT FIGURE

Influence shifts with every hand.

Dispatches from the review table

The critics
enter the fray.

Independent reviewers found a familiar trick-taking foundation transformed by layered bidding, Corruption, distinctive factions, and a richly realized setting.

Purple Phoenix Games found play brisk and enjoyable once the faction hierarchy clicked, praising the artwork and the optional scoring modes for adding intrigue beyond classic Spades.

Purple Phoenix GamesPrototype preview · 2021
Read the original review

Tabletop Simulator’s editorial blog selected Onin among its favorite medieval-themed games, applauding its accessible reinvention of trick-taking, distinctive rules, artwork, and color-conscious design.

Tabletop Simulator BlogEditor’s selection
Read the original feature

These articles evaluated prototype or pre-release versions of the game; summaries above are paraphrased from the linked original coverage.

The living archive

Unfold the lore

A structured chronicle designed to grow with new histories, characters, houses, and places.

History & timeline

The Chronicle

Clans & allegiances

The Great Houses

Places & battlefields

The Provinces

01

Deal

Thirteen cards. One Ruling Class.

02

Bid

Predict the Conscriptions you will win.

03

Battle

Resolve thirteen Skirmishes.

04

Score

Gain Influence. Carry Corruption.

05

Conquer

Be first to thirty-five Influence.

Extending the battlefield

A companion
for what comes next.

The site is prepared to connect with the mobile experience as it takes shape—without locking the game or its story into a template.

Physical edition of A Battle of OninPHYSICAL EDITION · A BATTLE OF ONIN
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The physical edition

Bring the conflict
to your table.

Claim the physical card game directly through the official secure checkout.

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