Your score will increase when you build a line of four or more balls of the same type to remove the from the board.
The line can be horizontal,vertical or diagonal.You can make these lines by moving balls across vacant aquares.
Extra balls will added if you failed to build a line.
The diamonds and bombs work as any other balls.
Besides,all the balls of the same type on the board can be removed when you successfully use a bomb in a line.
If the board fills up,the game is over.
And openfeint is available in the game.