The 20 Fastest Growing Facebook Apps: Mostly Social Games, As Usual

This past week was typical, in terms of which Facebook applications we saw gain the most users. Social games of various genres continued to gain millions of users. Similar to past weeks and months, Zynga’s virtual farming game FarmVille grew by 5.11 million monthly active users to reach 46.0 million, and the company’s role-playing mobster game Mafia Wars grew by 2.05 million to reach 23.2 million. They came in at number two and number four on our top 20 list.

However, number one goes to RockYou’s Birthday Cards, a full-featured virtual card-giving application. It was gradually declining over the last few months, started growing at the end of August, and reached around nine million users as of the first week in this month. Since then, it has for whatever reason found the curve in the hockey stick of growth: The app has gained 5.23 million MAUs in just the past seven days to reach 16.3 million.

Top Gainers This Week
Name MAU Gain↓ Gain, % Developer
1.Birthday Cards16,273,979+5,276,859+48.0RockYou!
2.FarmVille46,048,437+5,111,332+12.5Zynga
3.Your Indian Name!4,132,326+4,132,058+1 541 810.0AppSphere Inc.
4.Mafia Wars24,239,040+2,051,778+9.3Zynga
5.My Fishbowl3,302,112+1,568,713+90.5TwoFishes Interactive
6.Causes30,188,784+1,459,385+5.1Causes
7.Restaurant City14,359,677+1,291,766+9.9Playfish
8.Country Story6,207,442+871,019+16.3Playfish
9.YoVille16,291,957+769,233+5.0Zynga
10.Pet Society17,669,556+705,753+4.2Playfish
11.Horoscopes3,084,299+676,227+28.1RockYou!
12.Music10,338,786+649,598+6.7iLike, inc
13.Texas HoldEm Poker17,199,654+578,952+3.5Zynga
14.(Lil) Farm Life3,132,399+558,930+21.7Greenpatch Inc
15.What Type of Wife are you or will you be?894,967+540,820+152.7
16.Tattoodle5,032,939+535,049+11.9Make The Web Better
17.Animal Paradise2,043,280+523,034+34.4Rekoo
18.What’s your Actual Age?1,220,122+492,216+67.6q
19.Kad Raya504,166+431,307+592.0
20.Give Hearts6,932,658+429,392+6.66 waves

Number four, Your Indian Name!, has seen even sharper growth, and quite abruptly at that. The app translates your name into Hindi, and lets you very easily post that information to your Facebook wall. It grew from 265 users to 4.13 million by the weekend (there may be a problem with the data here). The app’s creator, AppSphere Inc, has 57 total applications by our count.

Seven apps in total gained more than a million users. At number five was My Fishbowl, made by TwoFishes Interactive. The virtual aquatic life game had been slowly growing from nothing in early August, until September 15 when it hit its stride, er, stroke. It grew by 1.57 million to reach 3.30 million MAUs. Keep an eye on this one.

At number six was Causes, one of the only non-game apps on the list. It grew by 1.50 million to reach a stately 30.2 million MAUs. At number seven was Playfish’s Restaurant City, the virtual restaurant game grew 1.29 million to reach 14.4 million.