This is a board game that has four Turles with magnets in their heads.
It has a round board the can turn so that the game isn't the same twice, since there are magnets in the board so that when your turtle lands on a space with a magnet underneath it will "fall asleep".
It was made in 1976 by Parker Bros in Canada. I remember playing it and being captivated by the magnetism aspect. It seems quite magical. I took the game apart and tried to figure out how it worked.