Games played with knucklebones have existed for well over 2000 years. Although over such a length of time many of the details of the original games have been lost, Knucklebones comes with directions which suggest various ways of playing the game. The game can be played by three or more players though the "oracular" version requires only one participant. The knucklebones are made of hand-poured resin using molds made from actual sheep bones and then cleaned and stained.