Zynga games has released a new mobile game in time for the holidays—Dream Zoo, the first game it’s designed with compressed mesh animation, which allows for a more options in a smaller storage space.

Artists in the San Francisco office were busy designing holiday-themed decorations for the game last week.

In the game, users can build their own zoo space and breed animals. Users earn hearts by going to other user’s zoos and cleaning up dirty animals and feeding them. It has a social component, since the people wandering user’s zoos are actually people that have interacted with that zoo before.

 And each time you breed your animals, the next generation animal has wilder colors and spots. Zynga designed the game to allow for hundreds of possibilities in coloration.

The game is available in App Stores. In San Francisco, Kerry Davis, IDG News Service.