The game was great, dev is greedy, every opportunity they will play a long ad, sometimes there is no way to get out even after patiently waiting. Just as you are in a groove, it randomly pops up the ad since it look like you been playing for so long now. In order to stop these nonsense, they are asking a hefty price to go vip, which I will never go for. This is a perfect example of how greed can ruin a great game. Don't bother.