Rice ball Sevens (Playing card game) app for iPhone and iPad

This is a card game called “Sevens(card game)” that you play by using “Rice ball” cards.
Using 7 cards, you line up in order the numbered cards next to each other with the same mark. You win by getting rid of all your cards.
If there is no card that you can put down, then you have to pass. If you pass 4 times then you have to give up.
The player who gives up has to automatically put down all his/her remaining cards down and the
game continues with the remaining players.

When you play in the game, you can collect "Rice ball" illustration.
Lets collect all "Rice ball" and complete your illustration.
"Rice ball (Onigiri)" is a collective name for foods loved in Japan.