Rules: Click a valid square to put down a token. In order for it to be valid, you must sandwich you opponents color between two of your own, either diagonal, horizontal, or vertical. Keep going until no spaces are left. The one with the most squares wins. If a player has no available move then a "pass" button will appear and you click that. than the next player will have control of the board.
Featured 12/25/13 Thanks all! This game is also known as Reversi. I used @eniflaw 's base for the blocks, changed it a bit, and added all the rest. http://scratch.mit.edu/projects/10306886/ The original board game was made by the Anjar Co.