Community Rules Guide
How to browse, create, share, and use custom rulesets in sessions.
"Community Rules" lets you browse and share user-created custom rulesets. You can create your own local rules and use them in sessions.
Browsing Rules
List Page
Browse all publicly shared custom rulesets.
・Filter — Narrow down by base rule (Koi-Koi / Hanawase / Inobota-Chūshin / Hachihachi)
・Sort — Order by usage count / like count / creation date
Each rule displays its name, description, base rule, usage count, and like count.
Actions on Rules
Logged-in users can perform the following actions:
Anonymous Account Limitation
Liking, bookmarking, copying, and creating rules requires a logged-in account (not available for anonymous accounts).
Creating Custom Rules
Select Base Rule
Choose Koi-Koi, Hanawase, Inobota-Chūshin, or Hachihachi as a base, or start from an empty configuration. Selecting a base rule auto-loads standard yaku and settings.
Enter Basic Info
Enter a rule name, description, and visibility (Private / Circle / Public).
Edit Yaku
Freely edit yaku across 3 categories (Completed Yaku / Hand Yaku / Special Yaku). For each yaku, you can toggle enabled/disabled, change names (JP/EN), adjust points, or delete. You can also add entirely new custom yaku.
Configure Feature Toggles
Toggle features based on your rules.
Feature Toggles
Using in Sessions
Prepare Your Rule
Bookmark a custom rule from "Community Rules" or create your own.
Select When Creating a Session
On the session creation screen, select your created or bookmarked custom rule from the "My Rules" dropdown below the official rules.
Rule Detail Page
Click a rule name to view its detail page, showing the list of available yaku (Completed / Hand / Special), a link to the creator's profile, and Like/Bookmark/Copy buttons. If you created the rule, Edit and Delete buttons are also available.
My Rules
View your created rules in the "My Rules" tab on the dashboard. Like counts and usage counts are shown for each rule.