**How to Send ball**: Use the pen catch your ball,then send the ball out with the pen touching the screen.When your pen release from the screen up the dashed line(the dashed line on the board is sending-ball-line),the ball will go out with current direction and with current power bar''s power. If you want to cancel a sending,you can release the pen down the dashed line.(Don''t release the pen when you move the pen.) Then when you put the pen on the screen down the dashed line,the old sending will be cancelled. **Buttons of this game**: In the game,there are three buttons on the left of the screen: The first button is ''play'',you can use it to chose the shooting mode: line or rolling;In the rolling mode,the ball is slowing more quickly than in the line mode; The second button is ''sand'',you can use it to chose the amout of the sand on the board.more sand,less resistance for the ball; The third button is ''menu'',you can use it to chose game''s options.