Have fun with the elements! Periodyx is fun, but the superstars of this game are the 118 element cards. The more you play with the PERIODYX™ game cards; the more you'll know about the elements. And the more you know, the more you'll appreciate and enjoy the periodic table of the elements. Players battle against each other for the highest element, gases, boiling point and more. To build the periodic table, simply match the colour coded bars on the sides of the cards and enjoy your giant table of elements.