Google Chrome Extension Firefox Browser Addon

Imporatnt Note: Some old players are unable to send or recieve gifts, to fix this issue you have to give it fresh permissions to do this. Go to Facebook.com -- Settings-- Apps And Websites -- Expired -- Search For Zombie Slayer and remove the app. After that open game in New Window, it will reverify permission and fixes the issue. This method will not effect your saved progress.

Zombie Slayer: Add Game Friends