That's right, the creators of anything ending with "Ville" on Facebook, Zynga, have launched their new addicting game PetVille. You can adopt pets, raise them, feed them, customize them, customize your home, and all the glory of a real pet in cartoon version. Of course it costs "coins" to buy the accessories, but what game out there didn't have coins and made it in the business? Very few. See a demo below.