Here we have for you this fantastic online mahjong game that includes math elements in it making it a brain exercising game. As you take part in this game, you should look to clear the playfield making necessary sum of digitson the tiles. The tile has to have at least one big side open in order to be selected. You can play this game alone but you also have the option of playing it in Multiplayer Mode where you can challenge or be challenged against other online players. You will be playing for high scores and you will surely need some intelligence for the purpose.