Wai Wai Mahjong: Yukai na Janyuu-tachi
Wai Wai means many people making noise so obviously this is a 4 player Mahjong game playing against many different characters.
わいわい麻雀 ～ゆかいな雀友たち～ Tag
Wai Wai means many people making noise so obviously this is a 4 player Mahjong game playing against many different characters.