Guide ยท ๐ธ
How to Play Hanafuda: Koi-Koi Rules in Plain Words
Written by Lin ยท Updated 2026-10-26 ยท 4 min read
Hanafuda is the Japanese card game with no numbers anywhere: forty-eight cards, twelve months, four cards each, every face a flower, an animal or a moon. Koi-Koi is the two-player matching game played with them, and it is the single best way into the deck - the rules fit in ten minutes and the gamble at the heart of it, daring your opponent while your own hand is still unfinished, stays exciting for years.
This guide walks the full turn structure, the point combos called yaku, and the Koi-Koi decision itself. You can play free against the computer in our browser version the whole way through - no download, no account, and the game enforces the legal moves for you while you learn.
Steps
- 1
Meet the four card ranks
The twelve months each hold four cards, and every card belongs to one of four ranks. Brights are the five prize pictures: crane with the sun, the moon, the cherry curtain, the rain master and the phoenix. Ribbons are the ten cards with poetry strips - three red with writing, three plain red, three blue. Animals (called Tane) are nine cards with a bird, animal or cup on them, like the boar, deer and butterflies. Everything else, twenty-four cards, is Plain (Kasu): flowers and strips with no ribbon at all.
- 2
Set up the round
Two players each receive eight cards in hand. Eight more cards are laid face-up in the middle as the field, and the remaining twenty-four form the draw pile. Both players can see the whole field for the entire round, which is where the strategy lives.
- 3
Play a card from your hand
Cards match by month, never by anything else. If a field card shares your month, both cards leave the field and go to your capture pile. If no field card matches, your card stays on the field as bait for later.
- 4
Flip one card from the deck
Every hand play is followed by a deck flip with the same rule: match the month, take the pair; no match, it joins the field. So each turn adds up to two captures, and watching what the deck flips for your opponent is half the game.
- 5
Check your captures for yaku
Captured cards score through combinations called yaku. The Bright family: all five Brights score 10, four without rain score 8, rain plus two Brights score 7, three without rain score 5. The animal combo Inoshikacho - boar, deer and butterfly - scores 5. The ribbon combos Akatan and Aotan - the three written red ribbons, or the three blue ones - score 5 each. Five Animals of any kind, five Ribbons of any kind or ten Plains score 1 each, and they stack on top of everything else.
- 6
Call Koi-Koi, or stop and bank
The moment you complete a yaku you choose. Stop: the round ends and your points are banked. Koi-Koi: the round continues and every additional yaku you complete doubles the whole pot - but if your opponent completes any yaku first while you dared, the doubled pot is theirs. If nobody stops and the cards run out, captured points count as they stand. A full match runs first to twelve points, so the Koi-Koi gamble gets more delicate the closer both players get.
Three habits that win rounds
Count the months. Every month has exactly four copies, and the field plus captures are all public. When three of a month are gone, the last card of that month captures on contact - hold yours, or hunt theirs.
Treat the rain Bright with respect. It is worthless for the clean Bright combos (the 8 and the 5) and only helps the rain 7, so collecting it early often locks you out of the better hand.
Do not ignore Plains. Ten of them are a real point, and in a scoreless standoff the player who quietly farmed Kasu wins the round everyone else forgot about.
Common beginner mistakes
Calling Koi-Koi with a dead hand. Doubling only helps if more yaku are realistically reachable; check your hand and the field before daring.
Stopping at one point while the field is rich. If ten or more cards remain and your captures are growing every turn, one more yaku is often cheap.
Ignoring your opponent's capture pile. Their animal and ribbon counts are public - a rising Tane count is a warning that their 5-pointer is one card away.
From practice table to flower table
Our hanafuda-koi game enforces every rule in this guide and plays against you at a fair pace, which makes it the cheapest possible way to make the mistakes once. When the yaku table is in your head, try Go-Stop, the Korean cousin on the same flower cards - same matching joy, a first-to-seven match structure and its own Go-or-Stop gambling call.
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