Marbles

Small game which can be played when waiting, in the bus etc as a time waster.
The game:
The object of the game is to collect marble sets. The larger the marble set collected, the larger the score. A marble set is a group of identical marbles connected to each other left-and-right, or up-and-down.

Score calculation is : n-selected x 10 x (n-selected minus one) One marble is 10 points. Two selected means 2 x 10 x 1 = 20 points. So 4 selected means 4 x 10 x 3 = 120 points. Ten marbles is 900 points etc.
An empty board is 1000 bonus points