How to Play Hanafuda (Koi-Koi): A Beginner's Guide (2026)

Before any game, let the deck introduce itself. A hanafuda deck holds 48 cards, divided into 12 suits — one for each month of the year. Each month is a plant: January is pine, February plum, March cherry blossom, April wisteria, May iris, June peony, July bush clover, August silvergrass (susuki), September chrysanthemum, October maple, November willow, and December paulownia. Every month gets exactly four cards, and that is the whole arithmetic: 12 × 4 = 48. There are no numbers printed anywhere. The month is the suit, and you'll soon read each picture the way you'd read a face.

Within those four-card sets, cards come in four ranks, and this is the bit worth memorizing because the whole scoring game rests on it:

• Hikari (光) — "brights." The five showpiece cards, the jewels of the deck: the Crane (January pine), the Curtain (March cherry), the Full Moon (August silvergrass), the Rain Man (November willow), and the Phoenix (December paulownia). Just 5 brights exist in the whole deck.
• Tane (種) — "animals" or "seeds." The mid-tier cards, 9 of them, showing creatures and living things: the nightingale, the cuckoo, the bridge of geese, the butterflies, the boar, the deer, and the famous Sake Cup on the chrysanthemum.
• Tanzaku (短冊) — "ribbons." The poetry slips, 10 cards, each a colored paper banner. Some are plain red, some carry red calligraphy (the akatan), and three are blue/purple (the aotan).
• Kasu (カス) — "plains" or "chaff." The plain background cards — the humble many. There are 24 of them, and despite the unkind name ("chaff," "garbage"), you will learn to want them, because collecting enough of them scores too.

Five + nine + ten + twenty-four = forty-eight. Everything balances. The brights are gorgeous, but I have a soft spot for the chaff; they teach you that in this game, no card is truly worthless. Sit with the deck a moment and find the five brights by sight — once you can spot a moon and a phoenix across the table, you're already half a player.

Now we sit down to the real thing. Koi-Koi (こいこい) is the two-player hanafuda game most people mean when they say "let's play." You need one full 48-card deck, two players, and a flat surface in good light. Decide who deals first — traditionally the oya (the dealer/parent), often chosen by a quick draw where the earlier month wins.

The deal is tidy once you've seen it. The goal is simple: 8 cards to each player's hand, and 8 cards face-up on the table (the field). The rest become the face-down draw pile.

The customary rhythm deals in little batches so nobody can claim you stacked it: two cards to your opponent, two to the field, two to yourself — then repeat that cycle until each player holds 8 and the field shows 8. (You'll sometimes see it dealt in batches of four; either works.) The remaining 32 cards sit in a neat face-down stack to the side. As one teacher gently notes, the exact batching is "more a formality and isn't necessary in casual games" — so don't fret if you simply count out 8, 8, and 8.

A word about the field. Those 8 face-up cards are the shared pool you'll be fishing from all round, so glance at them before you play. Are there three cards of the same month showing? (It happens, and it changes your plan.) Is a bright sitting there for the taking? Note it. In Koi-Koi the table is half the game — the cards in your hand only matter in relation to what's lying in the light.

Keep your captured cards in front of you, and as you take them, sort them gently into the four ranks — brights here, animals there, ribbons, plains. You're not just tidying; that little tableau in front of you is your scoresheet. You'll watch your yaku assemble themselves as the round goes on. There — eight, eight, and eight. The field is set, the deck is waiting, and the first turn is yours. Take a breath; it's gentler than it looks.

Here is the engine of the whole game, and it is wonderfully simple. A turn has two beats: play from your hand, then flip from the deck. Both beats are the same little move — match a card to the field by month, and capture the pair.

Beat one — your hand. Choose any card from your 8 and look for a card on the field of the same month. Pine matches pine, maple matches maple. If you find a match, lay your card on top of the field card and take both into your capture pile. If nothing on the field shares your card's month, you must still play a card — you place it face-up onto the field, where it now joins the pool (and may be captured later, by you or your opponent). You always play exactly one card from your hand, match or not.

Beat two — the deck. Now flip the top card of the draw pile face-up. Same rule: if it matches a card's month on the field, capture both. If it matches nothing, it stays on the field face-up. Here's the one tidy wrinkle: if the card you flip happens to match a month, you must take that pair — there's no choosing to leave it.

A small but important point: in any given month there are four cards. So when you play a card and there's a match on the field, you take that one matching card (a clean pair). If two cards of the same month are showing on the field, you take whichever one you choose. And if three of a month are on the field, your single matching card sweeps all four together — a lovely haul. These multi-match moments are where rounds swing.

Then it's your opponent's turn, and they do exactly the same: hand, then deck. Play passes back and forth, the field shifting like a tide pool — cards landing, cards getting swept — until either someone scores a yaku and decides to stop, or both hands run empty.

Let me give you a picture. Say you hold the March cherry-blossom Curtain (a bright!), and a plain March card is lying on the field. You play your Curtain onto it, scoop both, and set the Curtain proudly in your brights row. Then you flip the deck: up comes a June peony, and a June ribbon waits on the field — you take that pair too. A two-capture turn, and one of them a bright. That's a good turn, and you'll feel it. Don't overthink the matching; your eyes will learn the months faster than you'd believe.

This is the heart's blood of Koi-Koi — the yaku (役), the named combinations that score. You build them by capturing the right cards, and the moment you complete one, you get a choice (more on that next). Here are the real yaku and their point values; these are stable across the standard rules.

The bright hands (hikari): - Gokō — Five Brights: 10 points. All five bright cards. The crown of the deck. - Shikō — Four Brights: 8 points. Any four brights not including the Rain Man (willow). - Ame-Shikō — Rainy Four Brights: 7 points. Four brights that do include the Rain Man. (The rain man is worth less in company — a charming bit of card etiquette.) - Sankō — Three Brights: 5 points. Any three brights excluding the Rain Man.

The "sake" viewing hands (5 points each): - Tsukimi-zake — Moon Viewing: 5 points. The Full Moon (August) + the Sake Cup (September). - Hanami-zake — Flower Viewing: 5 points. The Curtain (March) + the Sake Cup (September). Two of Japan's loveliest customs — moon-gazing and blossom-gazing — made into card combos.

The animal & ribbon sets: - Inoshikachō — Boar-Deer-Butterfly: 5 points. The boar (July), deer (October), and butterflies (June). The name literally lists them. - Akatan — Red Poetry Ribbons: 5 points. The three ribbons bearing red calligraphy (pine, plum, and cherry months). - Aotan — Blue Ribbons: 5 points. The three blue/purple ribbons (peony, chrysanthemum, and maple months). - Tane — Animals: 1 point for collecting any 5 tane cards, +1 for each additional animal beyond five. - Tan / Tanzaku — Ribbons: 1 point for any 5 ribbons, +1 per extra. - Kasu — Plains/Chaff: 1 point for any 10 chaff cards, +1 per extra. (Yes, the humble chaff scores — collect enough and the "garbage" pays.)

A few graces to know. The Sake Cup is the deck's most versatile card: it anchors both viewing hands, and in many rulesets it doubles as a tane (animal) and as chaff — handy for finishing a Tane or Kasu count. And these stack: if you've gathered Three Brights and the boar-deer-butterfly, you score both. The points add up fast, which is exactly what makes the next decision so agonizing. Don't memorize this list in a night — keep it beside you, and within a few games the shapes will live in your hands.

Here is the moment the whole game is named for. You've just completed a yaku — say, Three Brights, worth 5. Now you must choose, out loud:

• Stop (call "shōbu!" — "match/decision"): you end the round immediately, bank the points for every yaku you hold, and that hand is over. Safe. Yours.
• Continue (call "koi-koi!" — literally "come on, come on!"): you keep playing, hungry for a bigger score. If you can build another yaku, or grow the one you have, before your opponent scores, your eventual total climbs — and calling koi-koi adds a multiplier on top.

The catch — and it is a real catch — is this: once you've called koi-koi, if your opponent completes a yaku before you score again, they win the round and you get nothing. All those points you were too greedy to bank? Gone. Worse, their score may be doubled as a penalty for your koi-koi. The gamble cuts both ways.

This is the soul of Koi-Koi. A player on the lovethynerd guide put it plainly: "It is a risk-reward scenario, because if you call Koi-Koi, your opponent will score double the points if they make a match and call Game before you increase your possible points." And the flip side: "You want to call Koi-Koi if you believe that you can obtain a better yaku, an additional yaku, or add to the value of a current yaku before your opponent makes a match."

So how do you decide? Read the table. How many cards are left in the deck and in hands? (Late in a round, there's little room for either of you to improve — banking is wiser.) What is your opponent obviously collecting — are they one card from Five Brights? (Then stop, immediately.) Do you have a clear shot — three brights with the fourth still live in the deck, a Tane set one animal away? (Then koi-koi, and reach for it.)

There's no formula, and that's the joy. Koi-Koi is a game of nerve dressed in flowers. Some nights you'll bank a tidy 5 and feel clever; some nights you'll whisper koi-koi, draw the exact moon you needed, and feel like the luckiest soul at the table. Both feelings are the game working as intended. When in doubt your first few games, lean toward stopping — you'll learn the rhythm of the risk soon enough.

Let's close the loop — how a round resolves, and how a full game is won.

A round ends one of two ways. Either a player completes a yaku and calls stop (shōbu) — banking their points — or both hands are exhausted with nobody choosing to stop, in which case the round is a draw and (in standard play) no points are scored. The player who stops takes everything they've earned; the opponent, even with cards captured, scores zero for that round. It's winner-take-the-round.

Now the doubling — pay attention, it's the rule new players most often miss. Two multipliers can stack:

1. The 7-point rule. If the winner's total from all their yaku is 7 points or more, that total is doubled. So a hand worth 7 actually scores 14; an 8 becomes 16. This is why reaching for that bigger yaku can be worth the koi-koi risk — crossing the 7-point line is a genuine cliff. 2. The koi-koi penalty. If the winner had called koi-koi earlier in the round and then went on to score, many rulesets double their score as the reward for the gamble paying off. (And mirror-image: if you called koi-koi and your opponent scores instead, their points may double as your penalty.)

These can compound. By the most common rules, a player who called koi-koi and finishes with 7+ points collects both bonuses — up to four times the base. A modest hand can become a round-defining haul. (Exact multiplier conventions vary by house and by app — confirm with your table before you start; I've logged the variation honestly below.)

The full game. A single round is rarely the whole game. The traditional length is 12 rounds — one for each month of the year — with the winner being whoever has the highest total points across all twelve. Many people instead play to a target score (50 is common) or simply agree on a number of rounds before they begin. The dealer (oya) usually rotates, or passes to whoever won the last round. Pick whichever suits your evening; there's no wrong choice.

And that, truly, is the whole game. The deck, the deal, the two-beat turn, the yaku, the koi-koi nerve, and the tally at the end. You came in not able to read a single card; you could sit down and play a proper round right now. That's the gift of hanafuda — it gives itself to you faster than almost any game I know. Shuffle, deal eight and eight and eight, and let the first round begin.

Koi-Koi has relatives, and it's worth a nod to them — partly for curiosity, partly because you may meet them.

Hachi-Hachi (八八, "Eighty-Eight") is the elder of the family — a three-player (sometimes more) hanafuda game named for a target of 88 points, with a richer scoring system and a betting culture behind it. Many scholars consider Koi-Koi a streamlined, friendlier descendant of these older capturing games like Hachi-Hachi and Hana-awase. If Koi-Koi is the cozy two-person evening, Hachi-Hachi is the bustling family table.

Go-Stop (고스톱) is hanafuda's Korean cousin, and it's enormously popular — for many Korean families it's the card game, especially around holidays. It's played with hwatu, a deck structurally almost identical to hanafuda (the cards even share the same months and ranks), with two small differences: the Willow and Paulownia suits are swapped, and hwatu decks usually ship with a few extra joker cards. Go-Stop plays like a more elaborate, often three-player Koi-Koi, with its own scoring twists and a "go or stop" decision that will feel instantly familiar — it's the same push-your-luck heartbeat. The two games are cousins by debate; scholars argue happily about who borrowed what from whom. If you love Koi-Koi, Go-Stop is your obvious next door to knock on.

And because hanafuda is Japanese to its roots, a few small graces make the table sweeter. Handle the cards with a little care — they're stiff little works of art, and people who love them treat them so. Agree on house rules before the deal (the Sake Cup's role, the doubling conventions, the round count) so the game stays warm, not argumentative. And there's a quiet seasonal poetry worth savoring: you're playing with the literal calendar of the year, moon-viewing in August, blossoms in March. One writer lovingly called the deck "a 'portable poetry' gallery." You needn't know the poems to feel it — but it's a nice thing to know it's there.

That's the family album. Learn Koi-Koi well and these cousins open easily; the grammar is shared, only the dialects differ. However you play, may the moon card find your hand. Now — shall we deal one more?