Reversi (1981)

Reversi is a game released for the Intellivision.

Gameplay
It is your basic game of Othello. In the game, you and your opponent must capture more pieces and territory than the other player by lining your coloured piece with another of the same colour with at least one piece of the opposite colour between them, thus causing that piece or pieces to change to your colour. The pieces can be lined up vertically, horizontally, and/or diagonally with each other. Try to capture the corners of the playing grid before your opponent can do the same, because this will give you an advantage.