I LOST ALL MY PROGRESS BECAUSE THIS GAME SYNC DATA ONLY WITH FACEBOOK. THERE IS NO PRIVATE ONLINE SAVE FOR THIS GAME. WHEN I DELETED MY OLD FACEBOOK ACCOUNT & THOUGHT OF LINKING NEW FACEBOOK ACCOUNT, THIS ALSO DELETED MY GAME SAVES. WTH. I HAD WORKED HARD TO BUY GOLD ROBOTS. Couldn't even load the google play sync. Uninstalled game for good.