Players: 2
Grid: any arbitrary size, but almost always played on a 8x8 grid
Rules: The game starts out with four pieces in the center ofthe board, two of one color, two of the other. They are arranged diagonally from each other in the centermost "square". The first player moves by adding his colored piece to the board. His move must be made is a tile that is adjacent to another piece on the board. Additionally, the move must "turn over" one or more opponents tiles. This is done by placing his colored tile around a row, column or diagonal line of the other players tiles. Then all the tiles are flipped and become the property of the first players. The turn proceeds to the second player who plays likewise.
Winning: The game ends when all possible moves have been made, or the game board is full of pieces. The winner is the player with the most of his colored pieces on the board. If multiple games are played, the margin of victory can be kept and the winner can be the first to 50 or 100 or some other point value.
Scoring: A greater score is accomplished by flipping over a greater number of tiles on your turn. This score will inevitably result in the person with the higher score when all tiles are turned over will be the winner, since this person will have turned over more tiles.