Guess 4 is a fun mind game. You have to guess four correct numbers in minimum time. You have only 10 attempts to guess right number.
At each guess you will get two clue.
-Number of correct digits in guessed number.
-Number of correct position of correct digits in guessed number.
Guess4 also keep track of your stats.
Its FREE Game.
Here is the weblink of this application.
Enjoy Playing with your mind.