Candy Crush Saga is a match-three puzzle video game released by the developer King on April 12, 2012 for Facebook, and on November 14, 2012 as a mobile app for smartphones. As of March 2013, Candy Crush Saga surpassed FarmVille 2 as the most popular game on Facebook, with 46 million average monthly users. It is a variation on their browser game Candy Crush. In November 2013, the “Dreamworld” expansion was launched, (unlocking at passing level 50 and opening by pressing an owl known as “Odus” which is on right hand side of screen) creating nocturnal-themed but more difficult version of older levels. The game is periodically updated, adding new “episodes” and playable levels; new levels are updated first on Facebook followed by Android and iPhone in late 2012. Candy Crush Saga has “episodes” of 15 levels each (the first two “episodes” have only 10 levels). An update to the game in November 2013 added the “Dreamworld” levels, giving players the opportunity to replay older levels with a new mechanic, which is also periodically updated. , the Facebook edition has over 800 regular levels and over 500 Dreamworld levels, with new levels added every two weeks. The game has also been released for Windows Phone in December 2014.