A game board was a structure upon which a board game was played.
In 2377, Joleg used the example of a stolen game board to illustrate the Nygean concept of Vekto Valek K'Vadim. While a judge might see it as being of little value, the board's owner might regard it as a priceless heirloom. He asked how a judge could possibly understand the loss better than the victim. (VOY: "Repentance")