First, you should be a registered member or connected via Facebook in order to add your friends. Guests are not allowed until registering.
How to Add Friends?
1) While playing in a game, you can send a friend request to a player by tapping on his/her profile picture then send friend request.
2) From main menu, press on
, then select the method you want to add your friend: Facebook, SMS, Email, or nickname.
, then select the method you want to add your friend: Facebook, SMS, Email, or nickname.