The number of big social applications that use Facebook’s virtual currency, Credits, continues to rise. The latest is Zynga’s smash hit farming game, FarmVille, the largest application on Facebook with nearly 84 million users a month.
The integration is pretty straightforward, as you can see from the screenshot below. Credits is shown as the first of several payment options — others include direct credit card payments, PayPal, and a variety of other payment services, including prepaid cards and offers.
Zynga has previously been running Credits in some of its smaller Facebook apps, like role-playing game Pirates: Rule the Caribbean. Credits is now also appearing on some of its other big applications, like pet-caring title PetVille. However, it’s not on others, including Café World.