To play with the Petz in this section, you will need to download the "Petz Player" from Petz.com.  You DO NOT need to have Petz 3 or 4 to use the Petz Player and it is FREE.  To play with the adopted Petz, you will need to have the indicated Petz Program.  You can buy them all from Petz.com.   HAVE FUN!!!