Mobile arcade game Fun Run led our list of emerging Facebook applications by monthly active users this week with 144 percent gain.

We define emerging applications as those that ended with between 100,000 and 1 million MAU in the past week. This week’s top apps grew between 90,000 and 490,000 MAU, based on AppData, our data tracking service covering traffic growth for apps on Facebook.

Mobile communication apps WhatsApp and Viber made the list at No. 3 and No. 7, respectively. Photo app Flickr continues to grow,  reaching 400,000 MAU. No. 11 Viddy is back on the rise.

Amazon launched a new sweepstakes “New Year, New You,” which has put its Amazon Sweepstakes at No. 16.

A few Christmas apps, calendar apps and games made up the rest of the list this week.

Top Gainers This Week

Name MAU Gain Gain % 1.  Fun Run 830,000 +490,000   + 144% 2.  Static HTML… [Eleventh Tab] 840,000 +440,000   + 110% 3.  WhatsApp 710,000 +390,000   + 122% 4.  Today Calendar 610,000 +340,000   + 126% 5.  Criminal Case 630,000 +290,000   + 85% 6.  Birthday Reminder 700,000 +240,000   + 52% 7.  Viber 890,000 +210,000   + 31% 8.  CoasterVille 390,000 +170,000   + 77% 9.  Flickr 400,000 +160,000   + 67% 10.  Village Life 420,000 +150,000   + 56% 11.  Viddy 750,000 +150,000   + 25% 12.  Predicciones Diarias 140,000 +130,000   + 1,300% 13.  My Christmas Tree 2012 760,000 +120,000   + 19% 14.  Marketland 980,000 +120,000   + 14% 15.  Offensive Combat 270,000 +110,000   + 69% 16.  Amazon Sweepstakes 480,000 +110,000   + 30% 17.  YOU DON’T KNOW JACK 510,000 +110,000   + 28% 18.  開心水族箱 Happy Fish 270,000 +100,000   + 59% 19.  ✰•❥MeRRy ChRisTmaS,My FriEndS ❥✰ 170,000 +90,000   + 113% 20.  LOVE TO YOU 210,000 +90,000   + 75%

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