Social Point’s Dragon City took the top spot on this week’s list of the fastest-growing Facebook games by monthly active users, up 2.61 million MAU for a gain of 13 percent. Since Dragon City launched in May 2012, the game’s gradually climbed the traffic charts, though it looks like the gains are slowing down to the point of plateauing in the near future.

Pretty Simple’s hidden object game Criminal Case took in 1.96 million MAU, putting the game at No. 2 with a 24 percent gain. King.com’s newest “Saga” game, Pet Rescue Saga, came in at No. 3 with a 7 percent increase of 1.46 million MAU. Zynga’s CastleVille had 1.16 million MAU this week, placing at No. 4 with a 16 percent gain. CookApps’ Pengle rounded out the top five games on this week’s list with a 14 percent increase of 647,152 MAU.

Four games on this week’s list saw traffic gains greater than 30 percent. CMUNE’s free-to-play shooter UberStrike brought in 629,941 MAU, a 33 percent gain. Qublix’s Bubble Land was the big gainer this week, up 318 percent with 502,544 MAU. PopCap’s Hidden Agenda grabbed 315,065 MAU, a 37 percent increase. Finally, GameHouse’s GameHouse Casino grew by 56 percent with 825,287 MAU.

Name MAU_ESTIMATE Gain Gain,% 1.  Dragon City 21,318,750 +2,614,031 + 13% 2.  Criminal Case 9,712,500 +1,966,406 + 24% 3.  Pet Rescue Saga 23,343,750 +1,466,802 + 7% 4.  CastleVille 8,156,250 +1,157,919 + 16% 5.  Pengle 5,087,500 +647,152 + 14% 6.  UberStrike 2,406,250 +629,941 + 33% 7.  Bubble Land 618,750 +502,544 + 318% 8.  Panda Jam 3,825,000 +470,401 + 13% 9.  Bubble Island 7,468,750 +453,498 + 6% 10.  Family Farm 3,462,500 +398,202 + 11% 11.  Pool Live Tour 12,762,500 +396,213 + 3% 12.  Diamond Dash 24,717,139 +383,187 + 1% 13.  Disney City Girl 3,050,000 +378,955 + 13% 14.  Bejeweled Blitz 8,593,750 +372,761 + 4% 15.  Bubble Saga 4,137,500 +371,362 + 9% 16.  Baseball Heroes 3,775,000 +358,488 + 10% 17.  Marketland 2,812,500 +339,678 + 12% 18.  Village Life 4,775,000 +331,145 + 7% 19.  Hidden Agenda 1,100,000 +315,065 + 37% 20.  GameHouse Casino 825,287 +311,018 + 56%

All data in this post comes from our traffic tracking service, AppData. Come back for our look at the fastest-growing Facebook games by daily active users on Wednesday and top emerging apps on Friday. You can learn more about Facebook’s new ranking system here.

Read our reviews of…

• Criminal Case
• Pet Rescue Saga
• Village Life
• Family Farm
• Disney City Girl
• Hidden Agenda
• UberStrike
• Panda Jam