Game theorist Ian Bogost created a new Facebook game called Cow Clicker. He calls it a Facebook game about Facebook games. If you want to play it now, you can click here. Or you may want to read the description and instruction first? They come next.
According to Bogost:


Sounds interesting. Let me try first before adding any input. I'll get back to you later.
According to Bogost:
Cow Clicker is a Facebook game about Facebook games. It's partly a satire, and partly a playable theory of today's social games, and partly an earnest example of that genre."How to play:
You get a cow. You can click on it. In six hours, you can click it again. Clicking earns you clicks. You can buy custom "premium" cows through micropayments (the Cow Clicker currency is called "mooney"), and you can buy your way out of the time delay by spending it. You can publish feed stories about clicking your cow, and you can click friends' cow clicks in their feed stories. Cow Clicker is Facebook games distilled to their essence."


Sounds interesting. Let me try first before adding any input. I'll get back to you later.