Koi-Koi
Flower-card matching against animal rivals: capture cards of the same month, build sets, then choose to stop or call koi-koi for double. Six rivals, hand-painted-style flower cards.
Play nowHow to play
Controls
Tap- Tap a hand card, then tap it again to play it.
- A card captures a field card of the same month (same number in the corner).
- Then a deck card is flipped and matches too.
- Complete a set (yaku) and choose STOP to score, or KOI-KOI to keep going for double.
- Three rounds; most points wins.
About the game
Koi-Koi is the classic two-player game played with hanafuda, the Japanese flower cards. The deck has 48 cards: twelve months with four cards each, every month shown by its own flower, from pine in January to paulownia in December. Each card is also a type: brights, animals, ribbons, or plain chaff. On your turn you play a card from your hand; if a field card shares its month, you capture both. Then you flip the top card of the deck and it tries to match the field too. Captured cards build yaku, the scoring sets: three or more brights, the boar, deer and butterfly together, moon or flower viewing with the sake cup, three red poem ribbons, three blue ribbons, or simply five animals, five ribbons or ten chaff.
The heart of the game is the koi-koi call. The moment you complete a new yaku you must choose. STOP banks your points for the round. KOI-KOI keeps the round going: score again and your points double, but if the rival completes a set and stops first, you get nothing and their points double instead. All the flower art is drawn on the fly, with the month number in each corner so matching is easy to learn. Six rivals, from a sleepy tanuki to the golden koi, who sees more and always leads.
Free to play in your browser. No download, no sign-up. Works on phones, tablets and computers. Your progress is saved on this device.
