Have been playing this game for over 3 years. It had its ups and downs in 2020, but recently, it has been holding pretty stable. I just wish there was a way to earn gold bars without having to spend $$ on them. For those who doubt the levels will get harder -you have to get beyond the first 200 levels - trust me, there are many new challenges ahead (I've finished over 750 levels now and am never bored.)