Mighty Math K-2 Zoo Zillions and Carnival Coundown Mighty Math Zoo Zillions and Carnival Countdown - 2 complete games For grades K-2 or ages 5-8 years. 2 CDs included for 2 fun games and lots of math learning Windows95/98/Me/2000/XP/Vista and Mac 7.1 - OS X Packaged in plastic jewel case