To be able to send and receive Free Gifts you must be connected to Facebook and have your Facebook Friends playing the game with you. You can take advantage of the Free Gifts feature from within the House of Unity.
If you send Free Gifts to your Friends, they will return the favor by sending some back as they accept them. You can send and receive Free Gifts containing Resources to and from your Friends. The Resources that you send as a Free Gift are not subtracted from your stored Resources.
Free Gifts have no expiration date and can be accepted at any time. You can only send one Free Gift per Friend per day. You can accept only 10 Free Gifts from your Friends per day. The amount of Resources you receive as Free Gifts depends on the upgrade Level of your Resource Buildings. The more Friends you have, the more Free Gifts you receive!
You will receive double the amount of Resources if you accept your Gift within 3 hours of it being sent.