Pros: Wonderful layout
Addictive strength/challenge of each level but breaks in between the tough rounds to gain confidence and skill.
Super easy to learn the different types of bubbles to blast, as well as only a few different colors to cycle through so it's not an influx of random balls.
CONS: ADS, ADS, ADS, and ADS! So many ******* ADS... There are about 3-5 ads prior, during, and post levels. Not to mention, anytime you open the app, leave it open and come back to it, or even look at it with just part of your eyeball, an AD pops up.
One could believe this is pay to play past level 90 or 100, I am currently on 150, and it's pretty tough without currency. If you can get past random crashes on tough levels that you've tried multiple times, the HORRIBLE cycling of colored balls that seem to sometimes be rigged so that you lose your chances and then guess what- have an opportunity to get 5 extra balls IFFFFF- YOU WATCH A 30 SECOND AD! Imagine that. Only, to revive 5 red balls when all you need is 1 BLUE (talk about BLUE BALLS!)