minigames. not only one game. plenty of them!
that's why aka-aki games never gets boring. in the morning you can challenge a friend to a round of "ramen dramen". or play "fatkitty boom" against some stranger on the underground in the afternoon. by playing minigames you earn precious items that make your house grow. it's worth practising.
this is because you'll have to defend your items against other players in mini-duels again and again.
in "hit them with a hammer" - on the right - you have to hit more frogs with a hammer than your challenger. and that's only one among plenty of minigames in aka-aki games!