[Every other week, Gamasutra examines the fastest-growing Facebook games according to monthly active users, looking at which titles and developers are having the most success attracting new players on the social network.]
The popularity of bubble-themed puzzlers inspired by Taito's classic
Bust-a-Move/Puzzle Bobble continues, with four out of the ten fastest-growing games on Facebook last week falling in that arcade genre.
Zynga's take on the puzzle type,
Bubble Safari, is at the top of the list. The recently launched game gained an impressive 10.6 million players in just the past seven days, and it now has a total of 14.8 million monthly active users.
Peak Games'
Lost Bubble is #2 with 1.9 million new players and 5.3 million total, followed by
Zynga Bingo, which attracted 1.5 million new users and now has 9.8 million total.
At #4 is
Bubble Blitz by PlayQ, which gained 1.1 million new users and has a 9.8 million total. Then there's King.com's
Candy Crush Saga, part of a series started by the very successful
Bubble Witch Saga, with 800,000 new players and an 11.4 million total.
Song Pop, a new game from FreshPlanet the challenges users to identify music tracks, showed up at #6 after earning 660,000 new users for a 900,000 total. Another bubble puzzler, Cookapps'
Buggle, took #7 after picking up 600,000 new users for a 5 million total.
Closing the top ten are Social Point's
Dragon City (490,000 new users; 1.2 milliont total) at #8, and King.com's new game
Pyramid Solitaire Saga (1.2 million total) and the Zynga game portal (5.6 million total), which both added 400,000 new users.
The full list of the top 20 fastest growing Facebook games along with exact monthly active user counts, are as follows:

All charts and data are courtesy of Facebook application metrics and trends site
AppData.