The core game is fun, I've played 1000 levels so far, so that should speak for itself. Lately I've been toying with the idea of uninstalling due to the unbearable amount of ads. In lower levels, you use ads to get additional moves while you build up your power ups, but in higher levels, you get an ad between every level, and some of the ads are unskipable. This shouldn't be the case since you've already spent enough time building your power up bank by watching ads before... Really frustrating.