This is a classical *Reversi* game. The goal is to end up with the most discs of your color.
W,A,S,D - rotate camera.
Mouse wheel - zoom.
Click to place a disc.
Players are designated Dark and Light. Beginning with Dark, each player in turn places one disc onto a vacant square on the board. Once placed, a disc never moves, though it may be "flipped" so that it changes color.
A disc placement, usually called a "move," may only be made if it "captures" one or more of the opponent's discs. A disc, or an unbroken line of discs of the same color, is captured when it becomes flanked on opposite ends by two opposing pieces, one of which must be the disc that was just placed on the board. Captures may be made along ranks (horizontal rows of squares), files (vertical rows of squares), or diagonals. Captured discs are flipped over to match the color of the capturing player's discs.