Originally , the game was only available for the App Store , but it was later released on ugust 2011 , and since then , its popularity has soared , to the point that it has made Imangi Studios more popular than Zynga .
Originally , the game was only available for the App Store , but it was later released on Google Play , the successor to Android Market . 
 The game has been available on the App Store from August 2011 , and since then , its popularity has soared , to the point that it has made Imangi Studios more popular than Zynga .