It was always random. But, for a short while, Gameloft decided to have like a spinner visibly cycle through the available options, leading some people to believe (insist) they could time the pattern to get what they want. Gameloft all along posted everywhere that the process was always random; and, at least in my experience, it clearly was - I would appear to click on it on one image and get something completely different. After a few months or whatever Gameloft decided to just get rid of the visuals and just display what you actually get.