Nintendo's First Product Was a Card Game: The Flower Cards Behind Koi-Koi Are Quietly Conquering America Again

On the twenty-third of September, 1889, a craftsman named Yamauchi Fusajiro opened a shop in Kyoto and called it Nintendo Koppai. The first character set — nin-ten-do — is most often read as "leave luck to heaven," a fitting motto for a maker of gambling cards, though even Nintendo has admitted the true origin is not fully documented. The company's first product was not a console. It was not a toy. It was hanafuda: flower cards, printed by hand, pressed from the bark of the mulberry tree.

For nearly a century this was the whole business. Yamauchi's apprentices painted the suits; his great deck, the Daitoryo — "President," bearing a moustachioed Napoleon on the box — became the standard of the underworld tables. He struck a deal with the tobacco monopoly to place cards in cigarette shops across the country, and that quiet distribution sustained the firm long before any arcade existed.

The lineage is unbroken. The company that ships the Switch still, in the same city, prints flower cards by the deck. When you set one of those cards down, you touch the first thing this empire ever sold.

The teaching: every empire has a first object. Nintendo's was a card you bet against the moon.

The shadow begins earlier, with foreigners. In 1543 Portuguese traders brought playing cards to Japan — carta, which the Japanese rendered as karuta. The four-suited decks spread fast, and gambling spread with them, and so the Tokugawa shogunate did what frightened authorities always do: it banned the cards.

What followed was a century-long game between gamblers and the law. Each time a deck was outlawed, the makers redrew it — new symbols, new structures — so it was technically a different object the edict had never named. Hanafuda is the masterstroke of that long evasion. Rather than four suits of thirteen, the gamblers built twelve suits of four, one suit for each month of the lunar calendar, each painted with its flower. To a magistrate's eye it could pass as a seasonal almanac, a teaching aid for children. To the men at the table, the mathematics of wagering were perfectly intact beneath the chrysanthemums.

• The disguise: beauty as cover — pine, plum, cherry, wisteria standing in for numbers.
• The function: a complete betting deck hidden inside a calendar.
• The result: a game the censors could not quite name, and so could not quite kill.

The teaching: hanafuda did not survive the ban despite its beauty. It survived because of it.

Take the deck apart and you hold a year. Hanafuda — literally "flower cards" — is forty-eight cards: twelve months, four cards to a month. Each month carries a plant and, in the richer months, a creature or object painted over it.

• January — pine and the crane.
• February — plum and the warbler.
• March — cherry blossom and the curtained banner.
• August — susuki grass, the full moon, and the flight of geese.
• November and December — the willow with its rainman and swallow, and the paulownia with the phoenix.

The cards rank in four tiers: the plain kasu (chaff), the ribbons (tanzaku), the animals (tane), and the twenty-point hikari — the "brights," five luminous cards including the crane, the curtain, the moon, the rainman, and the phoenix. To play is to learn the calendar by touch, to know that the moon belongs to August and the deer to the maples of October.

There is a word for the feeling the artwork carries: mono no aware — the gentle ache of things passing. The blossom is painted at its peak precisely because it will fall.

The teaching: you are not memorising a deck. You are memorising a year, and a year is a thing that ends.

Here is the tension I promised you, and it is the whole heart of this deck. On its surface, hanafuda is pure light — the moon, the crane, the falling cherry, a calendar of quiet things. In its history, it is shadow — smoke-filled rooms, marked debts, and the men society had cast out.

Those men were the bakuto, the itinerant gamblers, and they gave the underworld one of its enduring names. In a hanafuda game called Oicho-Kabu — a baccarat-like chase to a total ending in nine — there is a worthless three-card hand: 8-9-3. Spoken aloud, ya-ku-za. The hand sums to twenty; only the last digit counts; it scores zero. The gamblers took that dead hand as a name for themselves: the good-for-nothings, the outcasts. From a losing flower-card hand, a word for an entire criminal world.

The reputation clung to the cards, and to Nintendo. Some yakuza are said to have worn hanafuda motifs in their irezumi — the cherry over the den, inked into skin. For a long while the flower cards were guilty by association: an object of beauty that respectable houses did not display.

The teaching: the cherry blossom and the gambling den are painted on the same card. Do not pretend you can keep only the petals.

For decades the West knew none of this. Hanafuda stayed inside Japan, an heirloom of grandmothers and gamblers both. What changed is that Japan began exporting its stories, and the cards rode along inside them.

The clearest carrier is the Yakuza series — now titled Like a Dragon — where players, mid-saga, can sit down to a full game of Koi-Koi in a back-alley parlour. It is fitting almost to the point of poetry: a deck named after a losing yakuza hand, played by a yakuza protagonist, teaching millions of Western players the rules without a word of instruction. Anime and film carry the same cargo, and Nintendo itself keeps the door open by printing official Mario-themed hanafuda, putting flower cards on the same shelf as the console.

The current moment is broad. In July 2025 Gemdrops released hololive Holo's Hanafuda worldwide on Switch and PC, bundling Koi-Koi, Oicho-Kabu, and Hana-Awase with full English support. eShop adaptations and storefront decks sit beside it. I will not tell you sales have surged — I have no such ledger. I will tell you the cultural current is real and sustained.

The teaching: a thing does not always return by the front door. Sometimes it is smuggled in, inside a story you came for something else.

Koi-Koi. Say it twice, because that is what it means — "come on, come on" — or more plainly, again, again. It is not a description of the game. It is a dare you speak aloud at the table.

The play is simple to state. Two players. Eight cards each, eight face-up in the field. On your turn you match a card from your hand to a card of the same month in the field and capture both, then flip from the deck and match again. You are gathering captured cards into yaku — named scoring sets. Some are famous:

• Goko — all five brights. The hand everyone hopes for and almost never holds.
• Inoshikacho — the boar, the deer, the butterflies of three different months.
• Hanami-zake — the cherry-curtain and the sake cup. Flower-viewing with wine, the most beautiful yaku and the most contested in house rules.

And here is the knife's edge. The instant you complete a yaku, you must choose: bank the points and end the round, or call koi-koi — keep playing, chase a bigger combination, and risk it all. If your opponent completes a yaku before you do after you have called, they take the round, and the points you had are gone.

The teaching: the game is named not for what you win, but for the moment you refuse to stop. Greed is built into the title.

If you have spent any time at a card-game table — Magic, a Pokémon league, a Lorcana local — you already hold the discipline Koi-Koi demands. You simply have not aimed it at flowers yet.

Consider what the game actually asks of you. It is a public deck: all forty-eight cards are known, nothing is hidden in a banlist or a sealed pool. Every choice is therefore a read on probability and on your opponent's captures — exactly the skill of tracking outs and counting what remains. And the koi-koi call is a clean expected-value problem: bank a guaranteed small score, or push for a larger one against a falling chance. This is the same arithmetic as deciding whether to hold priority, whether to mulligan, whether to race or to block.

• Risk management: calling koi-koi is a bet on outs you can roughly count. Bank early when ahead on tempo; push only when the field favours you.
• Reading the field: watch which months your opponent has captured — denying them a near-complete yaku is often worth more than chasing your own.
• Table management: a full round of Koi-Koi takes minutes, the deck costs less than a single booster, and it resets a tired competitive brain between rounds at a local without scratching the itch.

The teaching: you do not need to learn how to win Koi-Koi. You need only point a skill you already own at a smaller, older, quieter deck.