After you got authorized in Facebook you can invite your friends and have fun together. To do that you need to go to the Friends menu. All your Facebook friends who play Cradle of Empires are displayed in the Friends menu.
You can also find friends in the game. Go to the Find friends tab and tap Invite.
The Envelope tab shows your incoming friend requests and your sent friend requests.
Friends with blue cards are added from Facebook. Friends with yellow cards are added from inside the game.
To make your game more enjoyable you can exchange gifts with your friends. You can help each other to restore your energy level faster. In order to do that you just need to go to the Friends menu and click Send under the Friend’s name.
The Recently helped tab shows friends who have sent gifts within a day.
The number of gifts you can send depends on your XP level. The higher XP level you have, the more gifts you can send. One more gift is added every ten XP levels.
XP level 5 +3 gifts
XP level 10 +1 gift
XP level 20 +1 gift
XP level 30 +1 gift