Square Up is a pattern matching game using a 2x3 portion of a 3x3 gameboard. Four players are shown on box top, but it may be possible that as few as two could play. The players are dealt cards intended to match patterns on the board. The colors in the 3x3 matrix could be changed one at a time by rotation of an associated knob on the board. Assumable a player would rotate one of the knobs to his color on his turn.