In of itself, a good game, with an interesting concept/design. Although what holds it back, and leads to a mere 2 star rating is the gems.. You need them WAY too much to fully experience the game, and you earn WAY too few compared to the amount you need. Had the ratio been only slightly behind it would be fine, but you only get a fracture of what you actually need, this includes using the daily gems and the watch ad for gems. I get it you need to make money, but surely there is a better way.