The first version of this game was released in December 2009 for Apple’s mobile operating system iOS (iPhone, iPad, iPod Touch). That release was a huge success so they decided to make versions for other mobile platforms (Maemo, webOS, Android, Symbian, Series 40 and Windows Phone). They also made versions even for computer operating systems (Mac OS, Windows) and gaming consoles (PlayStation, Xbox 360). There is also a version for Google’s social network Google Plus.