Zynga Games Facebook: Facebook App Favorites Walkthrough: Adding Zynga Games. NOTE: This video is Close Captioned in 9 languages! Here is a walkthrough of the latest addition to Facebook favorites. You can now add games to your own favorites tab. This is the quickest and easiest way to get to your favorite Zynga games. Add our games to your favorites today! Copyright 2011 Zynga Inc. All rights reserved.