My Free Zoo - 6 million zoo directors on My Free Zoo!
And of course we'll do our best to keep offering you new features!
To celebrate this anniversary, we've got a great campaign as token of gratitude for you all: each breeding that is successfully completed on Tuesday, May 28th 2013 between midnight UTC and 11:59:59 pm UTC*, will bring you twins!
So make sure to have as many breedings as possible end during that time, and you'll be able to welcome lots of tiny baby animals in your zoo!
*Please mind that there may be a difference of several hours between UTC (United Time Coordinated) and the country you live in!