It has been almost a year since we first started keeping track of the top 25 gaming applications on Facebook. In early December of last year, the top game was (Lil) Green Patch, with just over 6 million monthly active users. Today, Zynga’s FarmVille is in first place, with nearly 63 million monthly active users.

How times change. Facebook itself has grown from around 130 million monthly active users to more than 300 million. Social gaming has benefited from this growth, and also likely helped drive it.

Here are the highlights from this past month:

• Beyond FarmVille, Zynga’s Café World makes its debut at #2 with a little over 27.5 million monthly users. A number reached in an amazingly short amount of time, having only launched at the beginning of October.
• Another new appearance, Happy Aquarium from CrowdStar represents another booming genre: virtual aquariums. The game comes in at #4 with over 22,409,456 monthly actives, pushing Pet Society, YoVille, and Texas HoldEm Poker down to #5, #6, and #7 respectively.
• Playfish’s Restaurant City gains well over 2 million active users this past month, yet still drops to #9.
• Zynga’s Roller Coaster Tycoon itteration, Roller Coaster Kingdom appears for the first time at #11, boasting over 14 million players this past month.
• Another newcomer, Fish World from Tall Tree Games appears two spots down, at #13 (8,536,985 MAUs).
• Farming the Playfish way in Country Story earns 1,563,988 MAUs, but still drops from #13 to #14.
• Another new, international title appears at #21, with roughly 6 million total MAUs, called Paf le Chien (from developer, adictiz) which, loosely translated from French means “Paf the Dog” with Paf meaning the dog’s name and being the French onomatopoeia of hitting something.
• Chinese titles My Fishbowl and 開心農場 remain on the list at #23 and #25 respectively, with a new title, Island Paradise from Meteor Games landing between them at #24

With six new titles to the list, several international developers, and top games holding over 10 times the amount of monthly users as they did a year ago, it is amazing to see just how much the Facebook platform has grown. Likely, if you had told developers they would be getting MAUs in the 10s of millions 11 or 12 months ago, they’d have been hopefully, but probably wouldn’t find it too believable.