Summary: This application is FREE number game(like brain training game). [How to play] 1.You pick up numbers from the board. That total are number chosen by computer. 2.If the total is right, the score are added. 3.If the total is not right, your time are subtract. 4.If time is 0, game is over. 5.If disappeared almost numbers, level is upped. 6.If level is upper, difficulty is upped. ?Function? - Sounds.(can swicth ON / OFF) - Local Ranking - World Ranking(in iPhone & Android) Possibly, brain is trained by this game?