To play "Pet City," first add the virtual pet game to your Facebook account and then log in every day to look after your pets. By caring for your virtual pet and customizing its appearance, you earn experience and access higher levels of the game.
The home screen of the "Pet City" game has several toolbars. The top one shows your coin balance, your pet's cash balance, your level and your heart balance. As you gain experience in the game, you earn hearts, which allow you to level up. You can use pet cash to buy premium items in the game, such as special items of furniture and ingredients for meals for your pets. You can earn coins by completing quests or inviting your Facebook friends to play the game; spend the coins on buying items for your house.
The bottom toolbar has several icons which allow you to visit new locations in the game, open the closet, send gifts to your friends, view your collection of items and take screen shots. To complete these actions, click the relevant icon. Below the bottom toolbar is the friends bar. Click on your friends' photos in this toolbar to view your friends' pets.