Author’s note: The large traffic gains for Zynga’s “Ville” games on this week’s list of fastest-growing games on Facebook by monthly active users seems is based on dramatic surges in these games daily active user numbers, which has since dropped off. We’ve reached out to Facebook for information about the traffic spikes, and will update the article if we hear back.

FarmVille took the top spot this week with a gain of 18.8 million MAU, a 104 percent increase. The Ville was up by 12.9 million MAU, a 40 percent gain that let it take the No. 2 spot. CityVille snagged the No. 3 spot with 11.7 million MAU, a 53 percent gain. EA’s SimCity Social is continuing to grow, taking the No. 4 position with a 30 percent gain of 3.2 million MAU. Finally, FreshPlanet’s SongPop rounded out the top five titles on the list with 1.6 million MAU for a 30 percent increase.

Only two games on the list showed traffic increases of 20 percent or more. Social Point’s Dragon City was up by 1.3 million MAU for a 20 percent gain. Konami’s puzzle game Puzzle Chasers saw a large traffic surge of 430,000 MAU, a 307 percent gain.

Name MAU Gain Gain,% 1.  FarmVille 36,900,000 +18,800,000 + 104% 2.  The Ville 45,400,000 +12,900,000 + 40% 3.  CityVille 33,900,000 +11,700,000 + 53% 4.  SimCity Social 13,900,000 +3,200,000 + 30% 5.  SongPop 13,000,000 +1,600,000 + 14% 6.  Dragon City 9,000,000 +1,300,000 + 20% 7.  Bubble Safari 29,600,000 +1,300,000 + 5% 8.  Zynga Bingo 6,100,000 +600,000 + 11% 9.  Diamond Dash 18,700,000 +600,000 + 4% 10.  Zynga Slingo 13,500,000 +500,000 + 5% 11.  8 Ball Pool 4,500,000 +500,000 + 13% 12.  Top Eleven be a Football Manager 5,200,000 +500,000 + 11% 13.  Puzzle Chasers 570,000 +430,000 + 307% 14.  The Sims Social 16,700,000 +400,000 + 2% 15.  Social Wars 4,000,000 +300,000 + 8% 16.  Ruby Blast 2,000,000 +300,000 + 18% 17.  Candy Crush Saga 13,700,000 +300,000 + 2% 18.  Social Empires 5,800,000 +300,000 + 5% 19.  Pool Live Tour 10,700,000 +300,000 + 3% 20.  Jewel Kingdom 1,600,000 +200,000 + 14%

All data in this post comes from our traffic tracking service, AppData. Stay tuned for our look at the fastest-growing games by daily active users later today and top emerging apps on Friday.

Read our reviews of…

• Bubble Safari
• Candy Crush Saga
• The Ville
• SongPop
• SimCity Social
• Dragon City
• Zynga Slingo
• Ruby Blast
• Jewel Kingdom
• The Sims Social