One of Zynga’s more popular titles is virtual world YoVille, in which players can create their own avatar and apartment as they socialize with people they meet. However, recently YoVille players have been gaming for a cause (much like those in  The Bloom Initiative and Green Patch titles).

Last week, Zynga and the San Francisco SPCA announced a virtual pet shelter that allowed players to adopt cats and dogs and make donations via virtual transactions. As expected, players were able to take the virtual animal “home” to care for and play with. Thus far, the concept has raised more than $20,000 in a little over five weeks for helping homeless animals.

In addition, Zynga has also said today that altogether the company is seeing in excess of 10 million daily active users (DAU); making the California based company as one of the largest if not the largest social game developer across all social platforms.