Board Thread:Questions and Answers/@comment-122.106.138.37-20140726141832/@comment-24995069-20140727105732

You add friends through the LINE app. If they already have cookierun installed they will show up in the cookierun friends list once you restart the game. If they don't have cookierun you can send an invite in the game's main menu and you will receive 30 gift points per friend added regardless if they install the game or not.