Match 2 Japanese characters of the same type, in order to clear the board.
Match hiragana and romaji, hiragana and katakana or katakana and romaji, face up or face down, in order to clear the board.
In the settings, you can set the type of blocks that have to be matched.
When matching blocks of the same type, the tiles will be faced down by default, with the possibility of matching 2,3 or 4 blocks to dismiss them.