Zertz is a game for 2 players. It is played with 5 white, 7 grey and 9 black marbles on a board that gets smaller each turn. The object is to capture 2 marbles of each color, or 3 white marbles, or 4 grey marbles, or 5 black marbles. To capture you must jump with a marble over another marble, but both players play with the same marbles. And because the board gets smaller with every move, both players are forced towards a tense situation in which any move could be the crucial one. Be carefulif you create a trap for your opponent at the wrong moment, you may well face the consequences yourself!