Koikoi is a game of Hanafuda (Japanese Playing Cards).

-How to play Koikoi

Throw away the card to the table into play alternately. If there is a match of the month, you can get the cards.
You will be able to finish the game to get a point if your cards are flush. You are also possible to continue the game.
Can not score with each other and no game.
The winner is who get more points total 12 times game.

Koikoi for mac is supported Apple GameCenter.
Ranking of the mac version is shared with ios version.