Black And Blue

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Take exercise, kill time, release feelings, play with your android phone.It's a game of hitting sandbag, played with smartphone as gamepad and Chrome browser as display. no need fitness facilities and boxing coach.
Want to know how strong your fists are? the sandbag will tell you! you can proudly share with your friends.

1.Add "Big Punch" from Chrome and open it
2.Download game controller to your phone and install (android 2.3 or above)
3.Open the game controller and input 4 digitals displayed in the Chrome
4.Swing your phone to give a big punch!