We've reached and breached 10 million downloads! Thank you ZOOKEEPER fans! ZOOKEEPER! The overwhelmingly popular action puzzle game with over 10 million players now comes to the Google Play Store as a versus puzzle game – and it's free to play! The ZOOKEEPER you know and love is back, with a slew of new features in the mix – event rankings, avatar customization, item collection, and more – for a g