Zynga’s Bubble Safari Ocean comes in at the No. 1 spot on our list of top growing Facebook apps by monthly active users this week. The game, which is a follow-up to Bubble Safari, launched last week and has reached 4.4 million MAU.

Titles on our list gained the most MAU of any apps on the platform, growing from between 400,000 and 4.28 million MAU, based on our AppData tracking service.

Top Gainers This Week

Name MAU Gain Gain % 1.  Bubble Safari Ocean 4,400,000 +4,280,000   + 3,567% 2.  Causes 10,000,000 +2,900,000   + 41% 3.  Videos! 4,300,000 +2,100,000   + 95% 4.  schoolFeed 22,600,000 +1,700,000   + 8% 5.  Megapolis 3,000,000 +1,500,000   + 100% 6.  I want to add your birthday 22,300,000 +1,400,000   + 7% 7.  Instagram 43,000,000 +1,100,000   + 3% 8.  JibJab 3,600,000 +900,000   + 33% 9.  Phrases 4 Fun 1,700,000 +790,000   + 87% 10.  CastleVille 10,900,000 +700,000   + 7% 11.  Dragon City 17,400,000 +600,000   + 4% 12.  Stormfall: Age of War 2,100,000 +600,000   + 40% 13.  Diamond Dash 20,900,000 +600,000   + 3% 14.  Candy Crush Saga 23,200,000 +500,000   + 2% 15.  Static HTML… [Third Tab] 2,900,000 +500,000   + 21% 16.  Ruzzle 1,400,000 +500,000   + 56% 17.  Amazon 3,200,000 +500,000   + 19% 18.  Static HTML… [Eleventh Tab] 840,000 +450,000   + 115% 19.  HTC Sense 10,000,000 +400,000   + 4% 20.  TopFace 2,800,000 +400,000   + 17%

All data in this post comes from our traffic tracking service, AppData. Stay tuned for our look at the top weekly gainers by daily active users on Thursday, and the top emerging apps on Friday.